DAO, Vu Hung; DENISOV, Dmitry; BUZDIN, Alexandre I.; BRISON, Jean-Pascal

doi:10.1103/PhysRevB.87.174509

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DAO, Vu Hung
Laboratoire de cristallographie et sciences des matériaux [CRISMAT]

DENISOV, Dmitry
University of Amsterdam [Amsterdam] = Universiteit van Amsterdam [UvA]

BUZDIN, Alexandre I.
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Institut universitaire de France [IUF]

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Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2013-05-13, vol. 87, n° 17, p. 174509 (1-9)

American Physical Society

Resumen en inglés

We demonstrate that the vortex state in the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase may be very different depending on the field orientation relative to the crystalline axes. We numerically calculate the upper critical field near the tricritical point taking into account the modulation of the order parameter along the magnetic field as well as the higher Landau levels. For s-wave superconductors with the anisotropy described by an elliptical Fermi surface, we propose a general scheme for the analysis of the angular dependence of the upper critical field at all temperatures on the basis of an exact solution for the order parameter. Our results show that the transitions (with tilting magnetic field) between different types of mixed states may be a salient feature of the FFLO phase.< Leer menos

Palabras clave en inglés

Mixed states

Angular dependence

Mixed state

Superconducting critical field

Crystal anisotropy

Vortex state

Fulde-Ferrell-Larkin-Ovchinnikov phase

FFLO phase

Field orientation

Critical field

Tricritical point

Magnetic field

S-wave superconductors

Elliptical Fermi surface

Landau levels

Fermi surface

Critical points

DOI

http://dx.doi.org/10.1103/PhysRevB.87.174509

Proyecto europeo

New Century of Superconductivity: Ideas, Materials, Technologies

Proyecto ANR

/ - ANR-09-BLAN-0146
Des nanosondes ultra-sensibles pour explorer les distributions de charges électriques dans les supraconducteurs - ANR-12-BS10-0014

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Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798