Electron pairing by dispersive phonons in altermagnets: re-entrant superconductivity and continuous transition to finite momentum superconducting state
Year: 2025
Type: preprint
Abstract: We consider an altermagnet subject to the electron attractive potential mediated by the dispersive phonons. While altermagnetism suppresses superconductivity, scattering of electrons on the Fermi surface by thermal phonons suppresses altermagnetism. We show that this leads to the re-entrant superconductivity over temperature and to the stabilization of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) finite momentum superconducting state at low temperatures. The effect is mediated by the retardation effects and no d-wave pairing interaction is required.
Source: arXiv (Cornell University)
Author: Iorsh, Ivan
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6979222506
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