Monolayer V_{2}MX_{4} : A New Family of Quantum Anomalous Hall Insulators
We theoretically propose that the van der Waals layered ternary transition metal chalcogenide V_{2}MX_{4} (M=W, Mo; X=S, Se) is a new family of quantum anomalous Hall insulators with sizable bulk gap and Chern number C=-1. The large topological gap originates from the deep band inversion between spin-up bands contributed by d_{xz}, d_{yz} orbitals of V and spin-down band from d_{z^{2}} orbital of M at the Fermi level. Remarkably, the Curie temperature of monolayer V_{2}MX_{4} is predicted to be much higher than that of monolayer MnBi_{2}Te_{4}. Furthermore, the thickness dependence of the Chern number for few multilayers shows interesting oscillating behavior. The general physics from the d orbitals here applies to a large class of ternary transition metal chalcogenide such as Ti_{2}WX_{4} with the space group P-42m. These interesting predictions, if realized experimentally, could greatly promote the research and application of topological quantum physics.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2024 |
|---|---|
| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:132 |
|---|---|
| Enthalten in: |
Physical review letters - 132(2024), 10 vom: 08. März, Seite 106602 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Jiang, Yadong [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
|---|
| Anmerkungen: |
Date Revised 22.03.2024 published: Print Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1103/PhysRevLett.132.106602 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM370078772 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM370078772 | ||
| 003 | DE-627 | ||
| 005 | 20240324000016.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240324s2024 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1103/PhysRevLett.132.106602 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1343.xml |
| 035 | |a (DE-627)NLM370078772 | ||
| 035 | |a (NLM)38518306 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Jiang, Yadong |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Monolayer V_{2}MX_{4} |b A New Family of Quantum Anomalous Hall Insulators |
| 264 | 1 | |c 2024 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Revised 22.03.2024 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a We theoretically propose that the van der Waals layered ternary transition metal chalcogenide V_{2}MX_{4} (M=W, Mo; X=S, Se) is a new family of quantum anomalous Hall insulators with sizable bulk gap and Chern number C=-1. The large topological gap originates from the deep band inversion between spin-up bands contributed by d_{xz}, d_{yz} orbitals of V and spin-down band from d_{z^{2}} orbital of M at the Fermi level. Remarkably, the Curie temperature of monolayer V_{2}MX_{4} is predicted to be much higher than that of monolayer MnBi_{2}Te_{4}. Furthermore, the thickness dependence of the Chern number for few multilayers shows interesting oscillating behavior. The general physics from the d orbitals here applies to a large class of ternary transition metal chalcogenide such as Ti_{2}WX_{4} with the space group P-42m. These interesting predictions, if realized experimentally, could greatly promote the research and application of topological quantum physics | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Wang, Huan |e verfasserin |4 aut | |
| 700 | 1 | |a Bao, Kejie |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Zhaochen |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Jing |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Physical review letters |d 1985 |g 132(2024), 10 vom: 08. März, Seite 106602 |w (DE-627)NLM099656183 |x 1079-7114 |7 nnns |
| 773 | 1 | 8 | |g volume:132 |g year:2024 |g number:10 |g day:08 |g month:03 |g pages:106602 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1103/PhysRevLett.132.106602 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 132 |j 2024 |e 10 |b 08 |c 03 |h 106602 | ||