Anomalous fluctuation regimes at the FFLO transition
arXiv:cond-mat/0612387 · doi:10.1209/0295-5075/79/67001
Abstract
Recently some experimental evidences have been obtained in favour of the existence of the inhomogeneous Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconducting state in heavy-fermion superconductor CeCoIn_{5} and organic superconductor -(BETS)_{2}FeCl_{4}. However the unambiguous identification of FFLO state remains very difficult. We present the theoretical studies of the Gaussian fluctuations near the tricritical point (where the FFLO modulation appears) and demonstrate that the behavior of the fluctuational specific heat, paraconductivity and diamagnetism is qualitatively different from the usual superconducting transition. Special values of the critical exponent and the crossovers between different fluctuational regimes may provide a unique test for the FFLO state appearance.
6 pages, 2 figures. Work supported by ANR Extreme Conditions Correlated Electrons (ANR-06-BLAN-0220)
References in corpus (1)
Cited by in corpus (9)
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- FFLO state in thin superconducting films
- Critical behaviour in one dimension: unconventional pairing, phase separation, BEC-BCS crossover and magnetic Lifshitz transition
- Different types of the Fulde-Ferrell-Larkin-Ovchinnikov states induced by anisotropy effects
- Rectification and nonlinear Hall effect by fluctuating finite-momentum Cooper pairs
- Aharonov-Bohm effect in superconducting LOFF state
- Lifshitz tricritical point and its relation to the FFLO superconducting state
- Reciprocal and nonreciprocal paraconductivity in bilayer multiphase superconductors
- Oscillations of magnetization and conductivity in anisotropic Fulde-Ferrell-Larkin-Ovchinnikov superconductors