Hinge Majorana Flat Band in Type-II Dirac Semimetals
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2023
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866912080417783808 |
|---|---|
| author | Xie, Yue Wu, Xianxin Fang, Zhong Wang, Zhijun |
| author_facet | Xie, Yue Wu, Xianxin Fang, Zhong Wang, Zhijun |
| contents | Type-II Dirac semimetals exhibit a unique Fermi surface topology, which allows them to host novel topological superconductivity (TSC). We reveal a novel inter-orbital superconducting state, corresponding to the B1u and B2u pairings under the D4h point group. Intriguingly, we find that both first- and second-order TSC coexist in this novel state. It is induced by a dominant inter-orbital attraction and possesses surface helical Majorana cones and hinge Majorana flat bands, spanning the entire z-directed hinge Brillouin zone. Further investigation uncovers that these higher-order hinge modes are robust against the C4z symmetry-breaking perturbation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_11729 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Hinge Majorana Flat Band in Type-II Dirac Semimetals Xie, Yue Wu, Xianxin Fang, Zhong Wang, Zhijun Superconductivity Type-II Dirac semimetals exhibit a unique Fermi surface topology, which allows them to host novel topological superconductivity (TSC). We reveal a novel inter-orbital superconducting state, corresponding to the B1u and B2u pairings under the D4h point group. Intriguingly, we find that both first- and second-order TSC coexist in this novel state. It is induced by a dominant inter-orbital attraction and possesses surface helical Majorana cones and hinge Majorana flat bands, spanning the entire z-directed hinge Brillouin zone. Further investigation uncovers that these higher-order hinge modes are robust against the C4z symmetry-breaking perturbation. |
| title | Hinge Majorana Flat Band in Type-II Dirac Semimetals |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2303.11729 |