Field-induced superconductivity mediated by odd-parity multipole fluctuation

2023/12/12 by Kosuke Nogaki, Youichi Yanase, Nogaki, Kosuke +1 · 5 citations
Physics and Astronomy · Materials Science · #Physics of Superconductivity and Magnetism #Cold Atom Physics and Bose-Einstein Condensates #Iron-based superconductors research

paper · pdf · doi:10.48550/arxiv.2312.07053

Abstract

Field-induced superconductivity has long presented a counterintuitive phenomenon and a pivotal challenge in condensed matter physics. In this Letter, we introduce a mechanism for achieving field-induced superconductivity wherein the sublattice degree of freedom and the Coulomb interaction are tightly entwined. Our multipole-resolved analysis elucidates that lifting the fluctuation degeneracy results in an unconventional Cooper pairing channel, thereby realizing field-induced superconductivity. This research substantively augments the exploration of the latent potential of strongly correlated electron systems with sublattice degrees of freedom.

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