Thermal stability of pair density wave in a $d$-wave altermagnetic superconductor
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866917362974851072 |
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| author | Madhusuthanan, Amrutha N Karmakar, Madhuparna |
| author_facet | Madhusuthanan, Amrutha N Karmakar, Madhuparna |
| contents | We study finite-momentum superconductivity in a two-dimensional $d$-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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_25314 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Thermal stability of pair density wave in a $d$-wave altermagnetic superconductor Madhusuthanan, Amrutha N Karmakar, Madhuparna Superconductivity Strongly Correlated Electrons We study finite-momentum superconductivity in a two-dimensional $d$-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. |
| title | Thermal stability of pair density wave in a $d$-wave altermagnetic superconductor |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2603.25314 |