Topology of chalcogen chains
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2022
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866914902828908544 |
|---|---|
| author | Kłosiński, Adam Brzezicki, Wojciech Lau, Alexander Agrapidis, Cliò E. Oleś, Andrzej M. van Wezel, Jasper Wohlfeld, Krzysztof |
| author_facet | Kłosiński, Adam Brzezicki, Wojciech Lau, Alexander Agrapidis, Cliò E. Oleś, Andrzej M. van Wezel, Jasper Wohlfeld, Krzysztof |
| contents | We investigate the topological properties of the helical atomic chains occurring in elemental selenium and tellurium. We postulate a realistic model that includes spin-orbit interaction and show this to be topologically non-trivial, with a topological invariant protected by a crystalline symmetry. We describe the end-states, which are orbitally polarized, with an orbital density modulation strongly peaked at the edge. Furthermore, we propose a simplified model that decomposes into three orbital chains, allowing us to define a topological invariant protected by a crystalline symmetry. We contrast this result with recent observations made for the orbital Su-Schrieffer-Heeger model containing a $p$-orbital zigzag chain. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2212_04299 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Topology of chalcogen chains Kłosiński, Adam Brzezicki, Wojciech Lau, Alexander Agrapidis, Cliò E. Oleś, Andrzej M. van Wezel, Jasper Wohlfeld, Krzysztof Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons We investigate the topological properties of the helical atomic chains occurring in elemental selenium and tellurium. We postulate a realistic model that includes spin-orbit interaction and show this to be topologically non-trivial, with a topological invariant protected by a crystalline symmetry. We describe the end-states, which are orbitally polarized, with an orbital density modulation strongly peaked at the edge. Furthermore, we propose a simplified model that decomposes into three orbital chains, allowing us to define a topological invariant protected by a crystalline symmetry. We contrast this result with recent observations made for the orbital Su-Schrieffer-Heeger model containing a $p$-orbital zigzag chain. |
| title | Topology of chalcogen chains |
| topic | Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2212.04299 |