Multiple phase transitions in Pauli limited iron-based superconductors

Abstract

Specific heat measurements have been successfully used to probe unconventional superconducting phases in one-band heavy-fermion and organic superconductors. We extend the method to study successive phase transitions in multi-band materials such as iron based superconductors. The signatures are multiple peaks in the specific heat, at low temperatures and high magnetic field, which can lead the experimental verification of unconventional superconducting states with non-zero total momentum.

10 pages, 2 figures

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Cited by in corpus (9)

• Thermodynamic evidence for the Fulde-Ferrell-Larkin-Ovchinnikov state in the KFe2As2 superconductor
• Observation of the in-plane magnetic field-induced phase transitions in FeSe
• The ab initio study of unconventional superconductivity in CeCoIn${}_5$ and FeSe
• Quantum FFLO state in clean layered superconductors
• Critical behaviour in one dimension: unconventional pairing, phase separation, BEC-BCS crossover and magnetic Lifshitz transition
• Reentrant Fulde-Ferrell-Larkin-Ovchinnikov superfluidity in the honeycomb lattice
• Spin-imbalanced ultracold Fermi gases in a two-dimensional array of tubes
• Fulde-Ferrell-Larkin-Ovchinnikov superconductors near a surface
• Interplay between orbital-quantization effects and the Fulde-Ferrell-Larkin-Ovchinnikov instability in multiple-band layered superconductors