Quasi-one-dimensional superconductors in strong magnetic field

N. Dupuis , G. Montambaux , C.A.R. Sá de Melo

We determine the phase diagram of a quasi-one-dimensional conductor (weakly coupled chains system with an open Fermi surface) in a magnetic field. The usual Ginzburg-Landau regime is followed, when the field is increased, by a cascade of superconducting phases separated by first order transitions, which ends with a strong reentrance of the superconducting phase. These new phases show a novel kind of symmetry of laminar type. The Zeeman splitting does not completely suppress the reentrance in very strong field, the ground state being in this case a Larkin-Ovchinnikov-Fulde-Ferrell state.

Domaines: Articles anciens

N. Dupuis, G. Montambaux, C.A.R. Sá de Melo. Quasi-one-dimensional superconductors in strong magnetic field. Journal de Physique IV Proceedings, 1993, 03 (C2), pp.C2-311-C2-314. ⟨10.1051/jp4:1993263⟩. ⟨jpa-00251346⟩