Reentrant Superconductivity in Zeeman Fields
Fuente:
arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866918440493645824 |
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| author | Sano, Tomoya Tabata, Kota Ikegaya, Satoshi Asano, Yasuhiro |
| author_facet | Sano, Tomoya Tabata, Kota Ikegaya, Satoshi Asano, Yasuhiro |
| contents | We propose a theoretical model for a superconductor that exhibits the reentrant superconductivity in Zeeman fields. The Bogoliubov-de Gennes Hamiltonian includes three vectors in spin space: a $d$ vector of a spin-triplet superconducting state, a potential representing spin-orbit interactions, and a Zeeman field. When the three vectors are perpendicular to one another, the spin-orbit interaction suppresses superconductivity in weak Zeeman fields and enhances superconductivity in strong Zeeman fields. The instability (stability) of superconducting state is characterized by the appearance of odd-frequency (even-frequency) Cooper pairs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_14507 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Reentrant Superconductivity in Zeeman Fields Sano, Tomoya Tabata, Kota Ikegaya, Satoshi Asano, Yasuhiro Superconductivity We propose a theoretical model for a superconductor that exhibits the reentrant superconductivity in Zeeman fields. The Bogoliubov-de Gennes Hamiltonian includes three vectors in spin space: a $d$ vector of a spin-triplet superconducting state, a potential representing spin-orbit interactions, and a Zeeman field. When the three vectors are perpendicular to one another, the spin-orbit interaction suppresses superconductivity in weak Zeeman fields and enhances superconductivity in strong Zeeman fields. The instability (stability) of superconducting state is characterized by the appearance of odd-frequency (even-frequency) Cooper pairs. |
| title | Reentrant Superconductivity in Zeeman Fields |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2602.14507 |