| Autor: |
Skurativska, Anastasiia, Sigrist, Manfred, Fischer, Mark H. |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Research 3, 033133 (2021) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevResearch.3.033133 |
| Popis: |
Inversion symmetry is a key symmetry in unconventional superconductors and even its local breaking can have profound implications. For inversion-symmetric systems, there is a competition on a microscopic level between the spin-orbit coupling associated with the local lack of inversion and hybridizing terms that `restore' inversion. Investigating a layered system with alternating mirror-symmetry breaking, we study this competition considering the spin response of different superconducting order parameters for the case of strong spin-orbit coupling. We find that signatures of the local non-centrosymmetry, such as an increased spin susceptibility in spin-singlet superconductors for $T\rightarrow 0$, persist even into the quasi-three-dimensional regime. This leads to a direction dependent spin response which allows to distinguish different superconducting order parameters. Furthermore, we identify several regimes with possible topological superconducting phases within a symmetry-indicator analysis. Our results may have direct relevance for the recently reported Ce-based superconductor CeRh$_2$As$_2$ and beyond. |
| Databáze: |
arXiv |
| Externí odkaz: |
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