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Condensed Matter > Superconductivity
Title: Zero-field finite-momentum and field-induced superconductivity in altermagnets
(Submitted on 25 Sep 2023 (v1), last revised 27 Mar 2024 (this version, v2))
Abstract: We explore the possibilities for spin-singlet superconductivity in newly discovered altermagnets. Investigating $d$-wave altermagnets, we show that finite-momentum superconductivity can easily emerge in altermagnets even though they have no net magnetization, when the superconducting order parameter also has $d$-wave symmetry with nodes coinciding with the altermagnet nodes. Additionally, we find a rich phase diagram when both altermagnetism and an external magnetic field are considered, including superconductivity appearing at high magnetic fields from a parent zero-field normal state.
Submission history
From: Debmalya Chakraborty [view email][v1] Mon, 25 Sep 2023 18:00:03 GMT (394kb,D)
[v2] Wed, 27 Mar 2024 23:16:33 GMT (504kb,D)
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