Unconventional Superconductivity in Iron-Based Superconductors in a Three-Band Model

2014/01/14 by D. Crivelli, Dawid Crivelli, Andrzej Ptok
Materials Science · Physics and Astronomy · #Condensed matter physics #Cooper pair #Critical field #Ground state #Iron-based superconductors research #Momentum (technical analysis) #Pairing #Pauli exclusion principle #Phase (matter) #Phase diagram #Physics #Quantum mechanics #Superconductivity #Symmetry (geometry) #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.12693/aphyspola.126.a-16

published as Acta Physica Polonica A, Vol. 126 (2014), page A-16 · RevTeX, 5 pages, 3 figures. Presented on "XVI National Conference of Superconductivity", October 7-12, 2013, Zakopane, Poland

arxiv created 2014/01/14 · openalex publication_date 2014/10/01 · arxiv updated 2014/10/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Iron-based superconductors exhibit features of systems where the FuldeFerrellLarkinOvchinnikov phase, a superconducting state with non-zero total momentum of the Cooper pairs, is actively sought. Experimental and theoretical evidence points strongly to the FuldeFerrellLarkinOvchinnikov phase in these materials above the Pauli limit. In this article we discuss the ground state of iron-based superconductors near the critical magnetic eld and the full hT phase diagram for pnictides in case of intra-band pairing, in a three-band model with s symmetry.

Citations

• Possible Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State inCeCoIn5
• The Fulde–Ferrell–Larkin–Ovchinnikov State in Pnictides
• Coexistence of superconductivity and incommensurate magnetic order
• Texture in the Superconducting Order Parameter ofCeCoIn5Revealed by Nuclear Magnetic Resonance
• The Fulde–Ferrell–Larkin–Ovchinnikov phase in the presence of pair hopping interaction
• Population-imbalanced fermions in harmonically trapped optical lattices
• High-Field Pauli-Limiting Behavior and Strongly Enhanced Upper Critical Magnetic Fields near the Transition Temperature of an Arsenic-DeficientLaO0.9F0.1FeAs1−δSuperconductor
• Anisotropy of thermal conductivity and possible signature of the Fulde-Ferrell-Larkin-Ovchinnikov state inCeCoIn5
• Unconventional superconducting phases in a correlated two-dimensional Fermi gas of nonstandard quasiparticles: a simple model
• Influence of s± symmetry on unconventional superconductivity in pnictides above the Pauli limit – two-band model study
• Observation of Fermi-surface–dependent nodeless superconducting gaps in Ba 0.6 K 0.4 Fe 2 As 2