Zero-field finite-momentum and field-induced superconductivity in altermagnets
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arXiv
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866913287409500160 |
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| author | Chakraborty, Debmalya Black-Schaffer, Annica M. |
| author_facet | Chakraborty, Debmalya Black-Schaffer, Annica M. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_14427 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Zero-field finite-momentum and field-induced superconductivity in altermagnets Chakraborty, Debmalya Black-Schaffer, Annica M. Superconductivity Mesoscale and Nanoscale Physics Materials Science Strongly Correlated Electrons 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. |
| title | Zero-field finite-momentum and field-induced superconductivity in altermagnets |
| topic | Superconductivity Mesoscale and Nanoscale Physics Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2309.14427 |