The shapes of the Abrikosov vortices and of the magnetic-field lines in [ital c]-oriented superconducting slabs or films in a tilted magnetic field [ital B][sub [ital a

The mass shift induced by one-loop quantum fluctuations on self-dual Abrikosov-Nielsen-Olesen (ANO) vortices is computed using heat kernel/generalized zeta function regularization methods. The quantum masses of superimposed multivortices with vorticity lower than five are given. The case of two separate vortices ...

The paper considers the dependence of the effective elasticity of a niobium plate on the orientation of Abrikosov vortices relative to the direction in which the plate is bent. It is shown that if the vortices bend together with the sample relative to the magnetic field during oscillations, the elasticity of the plate in fields H=4 kOe ...

In superconductors penetrated by Abrikosov vortices, the magnetic pressure and the inhomogeneous condensate density induce a deformation of the ionic lattice. We calculate how this deformation corrugates the surface of a semi-infinite sample. The effect of the surface dipole is included.

Abrikosov vortices) in these type-II superconductors plays a decisive r51e here. ..... theory for a moving vortex [23] or vortex lattice [24]. ...

Direct magneto-optic observation of coupling of the Abrikosov vortices into macroscopic drops of increased flux density at remagnetization of the YBCO single crystal is presented. Appearance of these flux structures correspond to strong perturbations of t...

The possibility of existence of stable closed Abrikosov vortices of small size in nonuniform type-II superconductors is shown. These compact magnetic structures localize in all three dimensions and interact weakly with the external magnetic environment. The closed vortex is stabilized near the cylindrical interface between two superconductors with ...

We study electric and magnetic components of the gluon propagators in quark-gluon plasma in terms of center vortices by using a quenched simulation of SU(2) lattice theory. In the Landau gauge, the magnetic components of the propagators are strongly affected in the infrared region by removal of the center vortices, ...

In an overview of the elemental actinides Np and Pu stand out because of their anomalously low melting temperatures and the variety of complex phase transitions that occur in these elements and their alloys as a result of relatively modest changes in temperature and pressure. In this paper we suggest a novel explanation based on an analogy between the evolution of the actinide ground state as a ...

The structure of Abrikosov state (AS) in the type-II superconductors shares many properties of other physical systems, such as electron gases in the regime of the Quantum Hall Effect and the rotating atoms in magnetic traps. Usually, is described using Landau gauge for the magnetic field. We employ the symmetric gauge to reveal deep analogies between the ...

Direct magneto-optic observation of coupling of the Abrikosov vortices into macroscopic drops of increased flux density at remagnetization of the YBCO single crystal is presented. Appearance of these flux structures correspond to strong perturbations of the current trajectories and transition fro laminar to turbulent current flow.

We investigate the appearance of vortices and vortex lattices in two-dimensional, anisotropic, and rotating Bose-Einstein condensates. Once the anisotropy reaches a critical value, the positions of the vortex cores in the ground state are no longer given by an Abrikosov lattice geometry but by a linear arrangement. Using a variational approach, we ...

Data obtained by mechanically vibrating a superconductor sample in a magnetic field indicate that the Abrikosov fluxoids penetrate the sample in jumps. The number of vortices entering the sample in each jump is so high that even if they were distributed over the entire sample surface prior to penetration they would fill several surface layers with total ...

The properties of systems with pairing of spatially separated electrons and holes are studied below the superconducting transition temperature T{sub c}. Another phenomenon in these systems is predicted. It is shown that in certain nonuniform magnetic fields the planar vortices in which the electron-hole pairs rotate as a whole in the plane of the structure become energy ...

The intervortex interaction is investigated in very anisotropic layered superconductors in tilted magnetic field. In such a case, the crossing lattice of Abrikosov vortices (AVs) and Josephson vortices (JVs) appears. The interaction between pancake vortices, forming the AVs and JVs, produces the deformation of the ...

In this paper we discuss how Abrikosov-Nielsen-Olesen vortices can act as impurities that seed first-order phase transitions. The seeding mechanism comes about through dissociation of what is normally considered to be topologically stable defects. We discuss the conditions necessary for dissociation in which the core, which contains the seed of stable ...

We describe the decomposition of Abrikosov vortices into decoupled pancake vortices in superconductors having both electron and hole charge carriers. We estimate the critical current of such a decomposition, at which a superconducting-normal state transition occurs, and find that it is very sensitive to the magnetic field and ...

on the existence of `crossing' pancake vortex (PV) and Josephson vortex (JV) lattices in Bi2Sr2CaCu2O8+d (BSCCO. In this example the binary mixture is comprised of weakly coupled Josephson and pancake vortices viewed as stacks of 2D pancake vortices (PVs) which interact to form well-ordered hexagonal Abrikosov

We calculate the structure of individual vortices in rotating Bose-Einstein condensates in a transverse harmonic trap. Making a Wigner-Seitz approximation for the unit cell of the vortex lattice, we derive the Gross-Pitaevskii equation for the condensate wave function in each cell of the lattice, including effects of varying coarse grained density. We calculate the ...

A nondestructive readout (NDRO) random access memory based on the use of a two-dimensional array of strong pinning sites in a film in the mixed state is proposed. Information is stored as the off-center displacement of vortices in overlay films. The overlay films are electrodes of a Josephson junction, which detects the position of the vortex by means of the critical current ...

A nondestructive readout random access memory (RAM) cell based on the use of Abrikosov vortices in thin-film type-II superconductors is newly designed and experimentally tested. The cell occupies an area of 30 x 60 ..mu..m/sup 2/ with a 5-..mu..m design rule. Proper memory cell operation is achieved in the so-called 1, -1 mode using the shift saturation ...

We present a survey of results obtained with Etienne Sandier on vortices in the minimizers of the 2D Ginzburg-Landau energy of superconductivity with an applied magnetic field, in the asymptotic regime of large kappa where vortices become point-like. We describe results which characterize the critical values of the applied field for which ...

Using analytic and numerical techniques Nielsen-Olesen vortices, which in the context of Ginzburg-Landau theory are known as Abrikosov vortices of type-II superconductors, are studied for large Ginzburg-Landau parameter ?. We show that their energy is equal to (?n2/2)log?? to leading order, where n is the winding number of the vortex, ...

Non-Abelian vortices are topologically stable objects in the color-flavor locked phase of dense QCD. We derive a dual Lagrangian starting with the Ginzburg-Landau effective Lagrangian for the color-flavor locked phase, and obtain topological interactions of non-Abelian vortices with quasiparticles such as U(1)B Nambu-Goldstone bosons (phonons) and massive ...

Triangular arrays of Ni nanotriangles embedded in superconducting Nb films exhibit unexpected dynamical vortex effects. Collective pinning with a vortex-lattice configuration different from the expected fundamental triangular �Abrikosov state� is found. The vortex motion, which prevails against the triangular periodic potential, is produced by channeling effects between ...

We study the asymptotic interaction between two half-quantized vortices in two-component Bose-Einstein condensates. When two vortices in different components are placed at distance 2R, the leading order of the force between them is found to be (lnR/?-1/2)/R3, in contrast to 1/R between vortices placed in the same component. We derive ...

A theoretical model for how Bloch walls occurring in in-plane magnetized ferrite garnet films can serve as efficient magnetic micromanipulators is presented. As an example, the walls' interaction with Abrikosov vortices in a superconductor in close contact with a garnet film is analyzed within the London approximation. The model explains how ...

A theoretical model for how Bloch walls occurring in in-plane magnetized ferrite garnet films can serve as efficient magnetic micromanipulators is presented. As an example, the walls� interaction with Abrikosov vortices in a superconductor in close contact with a garnet film is analyzed within the London approximation. The model explains how ...

It is shown that the SU(2) semilocal model--the Abelian Higgs model with two complex scalars--admits a new class of stationary, straight string solutions carrying a persistent current and having finite energy per unit length. In the plane orthogonal to their direction they correspond to a nontrivial deformation of the embedded Abrikosov-Nielsen-Olesen (ANO) ...

It is shown that the SU(2) semilocal model--the Abelian Higgs model with two complex scalars--admits a new class of stationary, straight string solutions carrying a persistent current and having finite energy per unit length. In the plane orthogonal to their direction they correspond to a nontrivial deformation of the embedded Abrikosov-Nielsen-Olesen (ANO) ...

The vacuum of Yang-Mills theory contains singular stringlike objects identified with center (magnetic) vortices. Percolation of magnetic vortices is known to be responsible for the color confinement in the low-temperature phase of the theory. In our work, we study properties of the vortices at finite temperature using lattice ...

The formation of an Abrikosov flux vortex with its core axis perpendicular to an anisotropic (a-c or b-c) plane in YBa2Cu3O7 requires only 1/10 of the energy required by the formation of a vortex with its core axis perpendicular to an isotropic (a-b) plan...

We investigate the effects of an external magnetic field in the gluon dynamics of a color superconductor with three massless quark flavors. In the framework of gluon mean-field theory at asymptotic densities, we show that the long-range component H(tilde sign) of the external magnetic field that penetrates the color-flavor locked phase produces an ...

We investigate the effects of an external magnetic field in the gluon dynamics of a color superconductor with three massless quark flavors. In the framework of gluon mean-field theory at asymptotic densities, we show that the long-range component H� of the external magnetic field that penetrates the color-flavor locked phase produces an instability when ...

Exploiting the peculiar properties of proximity-induced superconductivity on the surface of a topological insulator, we propose a device, which allows the creation of a Majorana fermion inside the core of a pinned Abrikosov vortex. The relevant Bogolyubov-de Gennes equations are studied analytically. We demonstrate that in this system the zero-energy Majorana-fermion state is ...

Morrison' at CERN notes regional variation in fusion cell results and various workers have ascribed this to possible sociological factors. In view of the observation by other workers of gamma and neutrons from electric storms, the present paper seeks physical causes of such variation in terms of meteorological conditions. Previous work on Abrikosov ...

Using scanning tunneling microscopy and Ginzburg-Landau simulations, we explore vortex configurations in magnetically coupled NbSe{sub 2}/permalloy superconductor/ferromagnet bilayer. The permalloy film with stripe domain structure induces periodic local magnetic induction in the superconductor, creating a series of pinning-antipinning channels for externally added magnetic flux quanta. Such ...

We demonstrate that, in contrast with the single-component Abrikosov vortex, in two-component superconductors vortex solutions with an exponentially screened magnetic field exist only in exceptional cases: in the case of vortices carrying an integer number of flux quanta and in a special parameter limit for half-quantum vortices. For ...

The experimentally determined current-voltage characteristics of high-T{sub c} superconducting ceramics exhibiting the {open_quotes}peak-effect{close_quotes} in the magnetic field dependence of the transport critical-current density were described in terms of thermally activated flux creep at grain boundaries; taking into account the collective pinning of intergranular ...

Proposals to measure non-Abelian anyons in a superconductor by quantum interference of vortices suffer from the predominantly classical dynamics of the normal core of an Abrikosov vortex. We show how to avoid this obstruction using coreless Josephson vortices, for which the quantum dynamics has been demonstrated experimentally. The ...

In this article we present new, genuinely non-Abelian vortex solutions in SU(2) Yang-Mills-Higgs theory with only one isovector scalar field. These non-Abelian solutions branch off their Abelian counterparts (Abrikosov-Nielsen-Olesen vortices) for precise values of the Higgs potential coupling constant {lambda}. For all values of {lambda}, their energies ...

The effective action of sufficiently smooth center vortices in continuum Yang-Mills theory is investigated taking into account some of their basic properties observed in lattice simulations. The obtained action is given by the action of an ideal vortex configuration, which is local on the vortex worldsheet, nonlocal quantum corrections due to virtual gluon ...

We discuss the non-Abelian topological objects, in particular the non-Abrikosov vortex and the magnetic knot made of the twisted non-Abrikosov vortex, in two-gap superconductor. We show that there are two types of non-Abrikosov vortex in Ginzburg-Landau theory of two-gap superconductor, the D-type which has no concentration of the ...

The high atomic number of some superconducting elements such as niobium (Z=41) and tantalum (Z=73) and a high material thickness (e.g., t=300 mum) are emphasized as essential properties for development of a gamma-ray solid state detector with high intrinsic detection efficiency in the energy range up to 100 keV. To exploit these properties, a new detection principle based on the interaction of a ...

The high atomic number of some superconducting elements such as niobium (Z=41) and tantalum (Z=73) and a high material thickness (e.g., t=300 ?m) are emphasized as essential properties for development of a gamma-ray solid state detector with high intrinsic detection efficiency in the energy range up to 100 keV. To exploit these properties, a new detection principle based on the interaction of a ...

PACS. 74.606- Flux pinning, flux motion, fluxon-defect interactions. Abstract.- The energy of a pointlike vortex is calculated for a layered superconductor with very weak interlayer Josephson coupling. An energy barrier existing near the sample surface is found. Magnetization relaxation due to thermally activated penetration of pointlike vortices and quantum tunnelling of ...

It has been well established that the critical current density J{sub c} across grain boundaries (GBs) in high-temperature superconductors decreases exponentially with misorientation angle {theta} beyond {approx}2-3 degrees. This rapid decrease is due to a suppression of the superconducting order parameter at the grain boundary, giving rise to weakly pinned Abrikosov-Josephson ...

This paper presents the results of a comprehensive study of the relationship of the structural and electrodynamic characteristics of quasi-single-crystal films of the HTSC cuprate YBa2Cu3O7-? (YBCO) with various concentrations (several mass percent) of nanosize inclusions of the perovskitelike phase of BaZrO3 (BZO). High-resolution electron microscopy is used to investigate the nanostructure of ...

The dependence of the percolative critical current density at low magnetic fields on YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) layer thickness is studied by comparing grain, J{sub c}{sup G}, and grain-boundary, J{sub c}{sup GB}, critical current densities for a series of ex situ processed YBCO films on a RABiTS template. Both critical current densities decrease as a function of thickness and the ...

The first use of high temperature superconducting films is discussed as an information recording medium in a format that could be modified for use in a large disc dive system. The system uses Abrikosov vortices to store integer units, [phi][sub 0], of magnetic flux in a hysteresis loop. A proof of principle system has been assembled using a 0.3-[mu]m film ...

The properties of Nb/sub 3/Sn bridge junctions produced by double scribing are investigated. The current-voltage characteristics and the temperature dependence of the critical current of such film bridges are measured, and current steps are obtained in centimeter and decimeter microwave fields. A model is proposed to describe the steplike character of the current-voltage characteristics of bridges ...

The operation of superconducting coplanar waveguide cavities, as used for circuit quantum electrodynamics and kinetic inductance detectors, in perpendicular magnetic fields normally leads to a reduction in the device performance due to energy dissipating Abrikosov vortices. We experimentally investigate the vortex induced energy losses in such Nb ...

We report self-consistent calculations of the microscopic electronic structure of the so-called giant vortex states. These multiquantum vortex states, detected by recent magnetization measurements on submicron disks, are qualitatively different from the Abrikosov vortices in the bulk. We find that, in addition to multiple branches of bound states in the ...

A model of a damped dc-driven long Josephson junction (LJJ) with periodically installed microresistors or microshorts (microshunts), or crossed by a periodic chain of Abrikosov vortices, is considered. A maximum value of the bias current density admitting pinned states of a fluxon and a minimum value admitting free motion of fluxon are found, the latter ...

The increased flux expulsion as T->Tc (observed as the external magnetic field, Bz = +/- 0.75 oe. goes through zero [1]) is related to the increased transmission as T->Tc (observed in all cuprate superconductors in the EXFAS region of X-ray absorption [2]). The expulsion of Abrikosov vortices as T->Tc is a cooperative dynamic phenomenon that ...

Magnetically coupled superconductor-ferromagnet hybrids offer advanced routes for nanoscale control of superconductivity. Scanning tunneling microscopy (STM) and scanning magnetic force microscopy (MFM) coupled to magneto-transport measurements reveal rich vortex phase diagram. The magnetic stripe domain of the ferromagnet induces periodic local magnetic induction in the superconductor, creating a ...

We propose a model to construct the phase diagram for type-II superconductors through molecular-dynamics simulation. In this model, the Abrikosov vortices interact with long-range repulsion and short-range attraction. We are able to obtain the phase diagrams consisting of the vortex lattice, the intermediate-mixed phase (IMP), and the disordered vortex ...

Critical current data obtained as a function of magnetic field on an isolated grain boundary (GB) of a coated conductor and two other types of bicrystal GBs of YBa{sub 2}Cu{sub 3}O{sub x} show a peak in the critical current and an unusual hysteresis. These results provide support for a new mechanism for enhanced GB critical currents, arising from interactions of GB vortices ...

The time-dependent Ginzburg Landau Equation is solved analytically to find the response function of the dense vortex system, the order parameter ?, when the vortices in a superconductor are forced into motion by an alternative transport current results from an sinusoidal electric field with amplitude E and frequency ?. Base on the solution, motion and configuration of the ...

It has been predicted that superconducting vortices should be electrically charged and that this effect is particularly enhanced for high-temperature superconductors. Hall effect and nuclear magnetic resonance (NMR) experiments suggest the existence of charge accumulation in the vortex core, but the effects are small and the interpretation controversial. Here we show that the ...

and Superconductivity · Resources with Additional Information · Publications at ANL Alexei A. Abrikosov of the U.S. Department of Energy's Argonne National Laboratory...

We report on the magnetic field (H) dependence of the form factor |F|^2 of the vortex lattice (VL) in CeCoIn5 obtained by small angle neutron scattering for H applied along the crystallographic c-axis. Superconductivity (SC) in CeCoIn5 has several unconventional aspects to it: The d-wave SC is in competition with antiferromagnetic order, as suggested by the presence of an magnetic QCP located at ...

Artificial structures were intentionally introduced into Nb films in order to study the interaction of a single Abrikosov vortex with pinning sites caused by these known defects. A vortex trapped on one of these structures or defects can be induced to move either by thermal depinning or by pushing on the vortex with a transport current in one of the films. The resulting ...

In this paper we analyze the ground state of the heavy-quark qqqG system using standard principles of quark confinement and massive constituent gluons as established in the center-vortex picture. The known string tension K{sub F} and approximately-known gluon mass M lead to a precise specification of the long-range nonrelativistic part of the potential ...

The upper critical fields of niobium-tin and vanadium-silicon were measured and analyzed within the Ginzburg-Landau-Abrikosov-Gor'kov theory of type 2 superconductivity. The importance of many-body effects on the spin states of the superconductor is stressed, especially the renormalization of the Pauli paramagnetic limiting process. For niobium-tin failure to include ...

I discuss two exotic objects that must be experimentally identified in chiral superfluids and superconductors. These are (i) the vortex with a fractional quantum number (N = 1/2 in chiral superfluids, and N = 1/2 and N = 1/4 in chiral superconductors), which plays the part of the Alice string in relativistic theories and (ii) the hedgehog in the;l field, which is the counterpart of the Dirac ...

I discuss two exotic objects that must be experimentally identified in chiral superfluids and superconductors. These are (i) the vortex with a fractional quantum number (N = 1/2 in chiral superfluids, and N = 1/2 and N = 1/4 in chiral superconductors), which plays the part of the Alice string in relativistic theories and (ii) the hedgehog in the ^l field, which is the counterpart of the Dirac ...

We develop a stochastic Gross-Pitaveskii theory suitable for the study of Bose-Einstein condensation in a rotating dilute Bose gas. The theory is used to model the dynamical and equilibrium properties of a rapidly rotating Bose gas quenched through the critical point for condensation, as in the experiment of Haljan [Phys. Rev. Lett. 87, 210403 (2001)]. In contrast to stirring a vortex-free ...

We study, within Ginzburg-Landau theory, the responses of three-flavor superfluid quark-gluon plasmas to external magnetic fields and rotation, in both the color-flavor locked and isoscalar color-antitriplet diquark phases near the critical temperature. Fields are incorporated in the gradient energy arising from long wavelength distortions of the condensate, via covariant ...

Thin-film and bulk [001] tilt bicrystal grain boundaries (GBs) in YBa{sub 2}Cu{sub 3}O{sub 7} exhibit a strong dependence of critical current density, J{sub c} on misorientation angle. What was initially difficult to understand was the 30x smaller J{sub c} in bulk GBs which are microscopically more perfect. The authors review an explanation of this zero-field data, which is based on the pinning of ...

We consider a new cooling procedure which separates gluon degrees of freedom from singular center vortices in SU(2) LGT in a gauge invariant way. Restricted by a cooling scale ?4/?2 fixing the residual SO(3) gluonic action relative to the string tension, the procedure is RG invariant. In the limit ? -> 0 a pure Z(2) vortex texture is left. This minimal ...

In a direct scanning tunneling spectroscopy experiment we address the problem of the quantum vortex phases in strongly confined superconductors. The strong confinement regime is achieved in in�situ grown ultrathin single nanocrystals of Pb by tuning their lateral size to a few coherence lengths. Upon an external magnetic field, the scanning tunneling spectroscopy revealed novel ultradense ...

In a direct scanning tunneling spectroscopy experiment we address the problem of the quantum vortex phases in strongly confined superconductors. The strong confinement regime is achieved in in situ grown ultrathin single nanocrystals of Pb by tuning their lateral size to a few coherence lengths. Upon an external magnetic field, the scanning tunneling spectroscopy revealed novel ultradense ...

The effect of the twinning planes on the pinning of the Abrikosov vortices in type-II superconductors with the Ginzburg-Landau parameter {ital k}{much gt}1 is considered. The twinning-plane superconductivity is described in terms of a modified Ginzburg-Landau functional, in which the enhancement of superconducting properties near the twinning plane (TP) is ...

Using an extended Nambu-Jona-Lasinio model as a low-energy effective model of QCD, we show that the vacuum in a strong external magnetic field (stronger than 10(16)???T) experiences a spontaneous phase transition to an electromagnetically superconducting state. The unexpected superconductivity of, basically, empty space is induced by emergence of quark-antiquark vector condensates with quantum ...

Using an extended Nambu�Jona-Lasinio model as a low-energy effective model of QCD, we show that the vacuum in a strong external magnetic field (stronger than 1016T) experiences a spontaneous phase transition to an electromagnetically superconducting state. The unexpected superconductivity of, basically, empty space is induced by emergence of quark-antiquark vector condensates with quantum ...

The Abrikosov lattice in the multilayer cuprate superconductor CuBa2Ca3Cu3Oy (Cu-1223) has been experimentally and theoretically demonstrated to be composed of vortex molecules. Cu-1223 is considered to be a typical multicomponent superconductor. We show that in such a system the rotational freedom around the axis of the vortex molecular tube generates orientational disorder ...

The structure and local properties of a nonlinear microwave response of YBa{sub 2}Cu{sub 3}O{sub 7-x} block films, as well as microbridges of these films, are studied using low-temperature scanning microscopy. Correlation between the halfwidth of the temperature dependence of the third harmonic power W{sub TH} and the curve of the electron-beam induced voltage W{sub EBIV} is observed for the ...

Interstitials and vacancies in the Abrikosov phase of clean type-II superconductors are line imperfections, which cannot extend across macroscopic equilibrated samples at low temperatures. We argue that the entropy associated with line wandering nevertheless can cause these defects to proliferate at a sharp transition which will exist if this occurs below the temperature at ...

Superconductors containing mesoscopic artificially-engineered defects are orders of magnitude more resistant to the destructive effect of the magnetic field. We present scanning tunneling microscopy study of the vortex lattice configurations in a mesoscopic single crystal superconductor--normal metal heterostructure. We observe co-existence of a strongly interacting multiquanta vortex lattice and ...

d on 25 Feb 2003 (v1), last revised 10 Apr 2003 (this version, v2))We estimate the Coulomb energy of static quarks from a Monte Carlo calculation of the correlator of timelike link variables in Coulomb gauge. We find, in agreement with Cucchieri and Zwanziger, that this energy grows linearly with distance at large quark separations. The corresponding string tension, however, is several times ...

The natural candidates for the realization of color superconductivity are the extremely dense cores of compact stars, many of which have very large magnetic fields, especially the so called magnetars. In this paper we discuss how a color superconducting core can serve to generate and enhance the stellar magnetic field without appealing to a magnetohydrodynamic dynamo mechanism.

Transport entropy, Sd, defines both the thermal force, fth=?Sd?T, pushing a vortex along ??T in the Nernst effect and the thermal energy, epsilonth=SdT, transferred by a vortex in the Ettingshausen effect. All current theories associate the main contribution to Sd with the electromagnetic energy of superconducting currents circulating around cores, Fem(T). Using the universal relation between Fem ...

It is shown that within continuum theory and linear elasticity the interaction of point defects in two- and three-dimensional lattices with isotropic long-range interaction is ideally screened; i.e., the elastic relaxation of the background lattice exactly compensates the long-range interaction between the defects. A small residual short-range interaction results from the discreteness of the ...

We discuss degenerate critical points in two-dimensional fields described by complex wave functions. Typical examples include the familiar optical field in a plane normal to the direction of propagation, electrons in two-dimensional heterojunctions, the Abrikosov lattice in superconductors, thin films of liquid helium at low temperatures, etc. Using simple topological ...

In type II superconductors, an external magnetic field can partially penetrate into the superconducting phase in the form of magnetic flux lines or vortices. The repulsive interaction between vortices makes them to arrange in a triangular lattice, known as Abrikosov vortex lattice. This periodic vortex distribution is very fragile and ...

by the Abrikosov relation I with a. Ginzburg-Landau parameter which varied linearly with temperature. i . A.A.. Abrikosov,. "Fundamentals of the Theory ...

Some results af Abrikosov's theory concerning the properties of the mixed stage of type- ... Abrikosov reached, on the basis of the Ginsburg-Landau theory, ...

An experimental investigation into the distribution of vorticity in the large scale vortical motions

QCD is expected to be in the color-flavor locking phase in high baryon density, which exhibits color superconductivity. The most fundamental topological objects in the color superconductor are non-Abelian vortices which are topologically stable color magnetic flux tubes. We present numerical solutions of the color magnetic flux tube for diverse choices of the coupling ...

Theory So- lutions for the Magnetic. Flux Density and the Su- percurrent. Density. Around an Elliptical. Abrikosov. Vortex," scheduled for the January ...

We study, within Ginzburg-Landau theory, the responses of three-flavor superfluid quark-gluon plasmas to external magnetic fields and rotation, in both the color-flavor locked and isoscalar color-antitriplet diquark phases near the critical temperature. Fields are incorporated in the gradient energy arising from long wavelength distortions of the condensate, via covariant ...

This thesis describes three projects that I have worked on last three years. These projects are concerned with the physical properties of fluctuating membranes with tangent-plane orientational order and proteins there-in. First, we consider in mean-field theory the continuous development below a second-order phase transition of n-atic tangent plane order on a deformable surface of genus zero with ...

Lattice studies indicate existence of magnetic strings in QCD vacuum. We argue that recently found non-Abelian strings with rich world-sheet dynamics provide a pattern which fits the strings observed on the lattice. In particular, within this pattern we explain the localization of the monopole-antimonopole pairs on the magnetic string world sheet and the negative contribution of the magnetic ...

The vortex system in a high-T{sub c} superconductor has been studied numerically using the mapping to 2D bosons and the path-integral Monte Carlo method. We find a single first-order transition from an Abrikosov lattice to an entangled vortex liquid. The transition is characterized by an entropy jump {Delta}S{approx}0.4k{sub B} per vortex and layer (parameters for YBa{sub 2}Cu ...

We demonstrate a design for a scanning superconducting quantum interference device (SQUID) microscope in which the sample temperature can be varied over a large range. In this design, both sample and SQUID are in the same vacuum space, separated by a few microns. By firmly anchoring the SQUID to a low-temperature bath, the sample temperature can be changed while the SQUID remains superconducting. ...

We study ultracold neutral fermion superfluids in the presence of fictitious magnetic fields, as well as charged fermion superfluids in the presence of real magnetic fields. Charged fermion superfluids undergo a phase transition from type-I to type-II superfluidity, where the magnetic properties of the superfluid change from being a perfect diamagnet without vortices to a ...

Superconducting absorbers for thermal X-ray microcalorimeters should convert into thermalized phonons and transfer to the thermal sensor most of the energy deposited by single photons, on a time scale as short as a few tens of microseconds. Since deposition of X-ray energy in a superconductor produces quasiparticles by breaking up of Cooper pairs, the thermalization efficiency depends on the time ...

We review some analytical results of our studies of the charge- and spin density modulations (CDW and SDW) in a one- and two-dimensional electron systems. Self-consistent solutions of Bogoliubov- de Gennes equations for spin-charge solitonic superstructure and superconducting state are obtained in the framework of one and two-dimensional extended Hubbard models. Possible correspondence of the ...

The regular solutions for the Ginzburg-Landau(-Nielsen-Olesen) Abelian gauge model are studied numerically. We consider the static isolated cylindrically symmetric configurations. The well-known (Abrikosov) vortices, which present a particular example of such solutions, play an important role in the theory of type-II superconductors and in the models of ...

Optimized sputtered YBa{sub 2}Cu{sub 3}O{sub 7} (YBCO) thin films on CeO{sub 2}-buffered sapphire substrates are patterned into square lattices of submicrometer holes (antidots) with diameters of 250{endash}450 nm and lattice parameters of d=500{endash}1000nm without deterioration of superconducting properties. In the mixed state, matching effects between the Abrikosov vortex ...

MgB{sub 2} nanobridges were fabricated by e-beam lithography and Ar-ion beam milling. Nanobridges of widths ranging from 60 nm to 1 {mu}m and 3 {mu}m in length were realized by Ar-ion beam milling using amorphous carbon as etching mask. The processing did not harm the superconducting properties appreciably. High values of the critical current density, more than 10 MA/cm{sup 2}, were measured for ...

The influence of a microwave field on the resistive state brought on in a wide film by the passage of a dc current is investigated experimentally. In this situation the resistivity arises as a consequence of two processes: the motion of Pearl-Abrikosov vortices of the self-magnetic field of the current, and phase slip of the superconducting order ...

Shock waves with a leading-edge pressure of �1011 Pa, which were produced in a plasma focus setup, were used to increase the critical current density in YBCO(123) and Bi(2223) HTSC tapes. It was shown that the effect of chemically inactive high-temperature high-density plasma on the HTSC tapes leads to an irreversible increase in the critical current in high magnetic fields. The improvement of ...

We study the stability properties of the twisted vortex solutions in the semilocal Abelian Higgs model with a global SU(2) invariance. This model can be viewed as the Weinberg Salam theory in the limit where the non-Abelian gauge field decouples, or as a two component Ginzburg Landau theory. The twisted vortices are characterized by a constant global current I, and for I?0 ...

I. The upper critical fields of niobium-tin and vanadium-silicon were measured and analyzed within the Ginzburg-Landau-Abrikosov-Gor'kov theory of type II superconductivity. The importance of many-body effects on the spin states of the superconductor is stressed, especially the renormalization of the Pauli paramagnetic limiting process. For niobium-tin failure to ...

The flux-line lattice in type-II superconductors has unusual nonlocal elastic properties which make it soft for short wavelengths of distortion. This softening is particularly pronounced in the highly anisotropic high-T[sub c] superconductors (HTSC) where it leads to large thermal fluctuations and to thermally activated depinning of the Abrikosov vortices. ...

Starting from the strong-coupling SU(2) Wilson action in D = 3 dimensions, we derive an effective, semi-local action on a lattice of spacing L times the spacing of the original lattice. It is shown that beyond the adjoint color-screening distance, i.e. for L geq 5, thin center vortices are stable saddlepoints of the corresponding effective action. Since the entropy of these ...

S T U V W X Y Z A Abrikosov, Alexei Abrikosov, Alexei: Publications activated complex theory of reaction rates adenosine triphosphate AEC Information Retrieval Experiment Alpha...

Conference on Superconductivity (TICS '95), Hualien, Taiwan; Aug 8-11, 1995 (ANL/MSD/CP-91998) "Some Consequences of the Layered Structure of HTSC"; Abrikosov, A. A.;...

The characteristics of 'Jovian' vortices (the large vortices observed in the atmospheres of Jupiter,