Superconducting Diode Effect in Multiphase Superconductors
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866915023922659328 |
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| author | Shaffer, Daniel Chichinadze, Dmitry V. Levchenko, Alex |
| author_facet | Shaffer, Daniel Chichinadze, Dmitry V. Levchenko, Alex |
| contents | We identify a new mechanism for the intrinsic superconducting diode effect (SDE) in multiphase superconductors. Using a Ginzburg-Landau and a microscopic two-band model, we find phase transitions into a mixed phase with finite-momentum Cooper pairs and SDE with high (including maximal) diode efficiencies, despite the individual phases exhibiting no SDE and equal inversion parity. We thus show that parity mixing $-$ invoked in previous proposals $-$ is not a crucial ingredient for SDE. The new mechanism may be relevant in a multitude of known multiphase superconductors like UTe$_2$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_14612 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Superconducting Diode Effect in Multiphase Superconductors Shaffer, Daniel Chichinadze, Dmitry V. Levchenko, Alex Superconductivity We identify a new mechanism for the intrinsic superconducting diode effect (SDE) in multiphase superconductors. Using a Ginzburg-Landau and a microscopic two-band model, we find phase transitions into a mixed phase with finite-momentum Cooper pairs and SDE with high (including maximal) diode efficiencies, despite the individual phases exhibiting no SDE and equal inversion parity. We thus show that parity mixing $-$ invoked in previous proposals $-$ is not a crucial ingredient for SDE. The new mechanism may be relevant in a multitude of known multiphase superconductors like UTe$_2$. |
| title | Superconducting Diode Effect in Multiphase Superconductors |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2406.14612 |