CROITORU, Mihail D.; BUZDIN, Alexandre I.

doi:10.1088/0953-8984/25/12/125702

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CROITORU, Mihail D.
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

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

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Journal of Physics: Condensed Matter. 2013, vol. 25, n° 12, p. 125702

IOP Publishing

Résumé en anglais

We study the anisotropy of the in-plane upper critical magnetic field coupled to the orbital motion and the spins of electrons in a layered dx2‑y2 organic superconductor in the spatially modulated Fulde-Ferrell-Larkin-Ovchinnikov phase. We show that the interplay between the nodal structure of the order parameter and its spatial modulation results in the very peculiar angular dependence of the onset of superconductivity in the high-field regime. The principal axis of the field-direction dependence of the onset of superconductivity is tilted by π/4 in the temperature range 0.056 ≲ T < 0.56. In some cases the resonance between the modulation wavevector and the vector potential of a parallel magnetic field may lead to anomalous cusps in the temperature and in-plane angular dependences of the onset of superconductivity. The obtained results support the interpretation of the recent experiments as evidence of the FFLO state.< Réduire

DOI

http://dx.doi.org/10.1088/0953-8984/25/12/125702

Projet Européen

Superconductivity in quantum-size regime
New Century of Superconductivity: Ideas, Materials, Technologies

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