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.

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• FFLO
• Superconductivity
• Altermagnets
• Eliashberg theory