Thermal stability of pair density wave in a $d$-wave altermagnetic superconductor
Superconductivity
2026-03-27 v1 Strongly Correlated Electrons
Abstract
We study finite-momentum superconductivity in a two-dimensional -wave altermagnetic superconductor using a non-perturbative Monte Carlo approach beyond mean-field theory. We show that altermagnetism stabilizes a pair density wave (PDW) state without external magnetic fields and enables its survival at finite temperatures with robust phase coherence. Our results establish altermagnetism as a promising route to realizing thermally stable PDW superconductivity and identify clear thermodynamic and spectroscopic signatures.
Keywords
Cite
@article{arxiv.2603.25314,
title = {Thermal stability of pair density wave in a $d$-wave altermagnetic superconductor},
author = {Amrutha N Madhusuthanan and Madhuparna Karmakar},
journal= {arXiv preprint arXiv:2603.25314},
year = {2026}
}
Comments
10 pages, 5 figures