Electron pairing by dispersive phonons in altermagnets: Reentrant superconductivity and continuous transition to finite momentum superconducting state

I. V. Iorsh

doi:10.1103/6wxh-p4mc

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Electron pairing by dispersive phonons in altermagnets: Reentrant superconductivity and continuous transition to finite momentum superconducting state

I. V. Iorsh

DOI 10.1103/6wxh-p4mc · Physical Review B

T1

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Abstract

We consider an altermagnet subject to the electron attractive potential mediated by bosonic excitations. While altermagnetism suppresses superconductivity, the scattering of electrons on the Fermi surface by thermal bosons suppresses altermagnetism. We show that this leads to the reentrant superconductivity over temperature and to the stabilization of the Fulde-Ferrell-Larkin-Ovchinnikov finite momentum superconducting phase at low temperatures. The effect is mediated by the retardation effects and thus no d-wave pairing interaction is required.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
RuO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
MnTe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown