Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2022
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2207.01191 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916239576662016 |
|---|---|
| author | Cavanagh, D. C. Agterberg, Daniel F. Brydon, P. M. R. |
| author_facet | Cavanagh, D. C. Agterberg, Daniel F. Brydon, P. M. R. |
| contents | We study the influence of symmetry-breaking perturbations on superconductivity in multiorbital materials, with a particular focus on an external magnetic field. We introduce the field-fitness function which characterizes the pair-breaking effects of the perturbation on a given superconducting state. For even parity superconductors we find that this field-fitness function for an external magnetic field is one, implying that the paramagnetic response is controlled only by a generalized effective $g$-factor. For odd parity superconductors, the interplay of the effective $g$-factor and the field-fitness function can lead to counter-intuitive results. We demonstrate this for $p$-wave pairing in the effective $j=3/2$ electronic states of the Luttinger-Kohn model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2207_01191 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Pair-breaking in superconductors with strong spin-orbit coupling Cavanagh, D. C. Agterberg, Daniel F. Brydon, P. M. R. Superconductivity We study the influence of symmetry-breaking perturbations on superconductivity in multiorbital materials, with a particular focus on an external magnetic field. We introduce the field-fitness function which characterizes the pair-breaking effects of the perturbation on a given superconducting state. For even parity superconductors we find that this field-fitness function for an external magnetic field is one, implying that the paramagnetic response is controlled only by a generalized effective $g$-factor. For odd parity superconductors, the interplay of the effective $g$-factor and the field-fitness function can lead to counter-intuitive results. We demonstrate this for $p$-wave pairing in the effective $j=3/2$ electronic states of the Luttinger-Kohn model. |
| title | Pair-breaking in superconductors with strong spin-orbit coupling |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2207.01191 |