Ab initio study on engineering the quantum anomalous Hall effect in the compensated antiferromagnet MnBi2 Te4 - Details

author：

Li, Z. (Li, Z..) ^[1] | Han, Y. (Han, Y..) ^[2] | Liang, W. (Liang, W..) ^[3] | Qiao, Z. (Qiao, Z..) ^[4]

Indexed by：

EI Scopus

Abstract：

Recently,　the　quantum　anomalous　Hall　effect　(QAHE)　has　been　theoretically　proposed　in　compensated　antiferromagnetic　systems　by　using　the　magnetic　topological　insulator　model　[Phys.　Rev.　Lett.　134,　116603　(2025)10.1103/PhysRevLett.134.116603].　However,　the　related　and　systematic　study　based　on　a　realistic　material　system　is　still　limited.　As　the　only　experimentally　realized　antiferromagnetic　topological　insulator,　MnBi2Te4　becomes　a　vital　platform　for　exploring　various　topological　states.　In　this　work,　by　using　comprehensive　first-principles　calculations,　we　illustrate　that　the　QAHE　can　also　be　realized　in　compensated　antiferromagnetic　even-septuple-layer　MnBi2Te4　without　combined　parity-time　(PT)　symmetry.　Using　a　magnetic　topological　insulator　model,　the　layer-resolved　Chern　number　is　calculated　to　further　understand　the　presence　of　different　Chern　numbers.　The　application　of　external　hydrostatic　pressure　will　strengthen　the　Te-Te　quasicovalent　bond　due　to　the　dramatic　compression　of　the　van　der　Waals　gap.　Thus,　the　topological　nontrivial　gap　exceeds　the　room-temperature　energy　scale　in　a　wide　range　of　pressures.　Additionally,　we　find　that　constructing　MnBi2Te4/CrI3　heterostructure　can　realize　the　compensated　antiferromagnetic　configurations　with　QAHE.　Our　work　demonstrates　the　realization　of　QAHE　in　compensated　antiferromagnetic　even-septuple-layer　MnBi2Te4　and　provides　a　reliable　strategy　to　obtain　the　corresponding　magnetic　configurations.　　©　2025　American　Physical　Society.　

Keyword：

Community：

[ 1 ] [Li Z.]International Center for Quantum Design of Functional Materials, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, Anhui, 230026, China
[ 2 ] [Li Z.]Hefei National Laboratory, University of Science and Technology of China, Hefei, 230088, China
[ 3 ] [Han Y.]Department of Physics, Fuzhou University, Fuzhou, Fujian, 350108, China
[ 4 ] [Liang W.]International Center for Quantum Design of Functional Materials, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, Anhui, 230026, China
[ 5 ] [Qiao Z.]International Center for Quantum Design of Functional Materials, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, Anhui, 230026, China
[ 6 ] [Qiao Z.]Hefei National Laboratory, University of Science and Technology of China, Hefei, 230088, China

Reprint 's Address：

Email：

Show more details

Version：

Ab initio study on engineering the quantum anomalous Hall effect in the compensated antiferromagnet MnBi2 Te4
2025，Physical Review B

Related Keywords：

Source ：

Physical Review B

ISSN： 2469-9950

Year： 2025

Issue： 11

Volume： 111

3 . 2 0 0

JCR@2023

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 0

Affiliated Colleges：

Get Fulltext

DOI Library Discovery Baidu Scholar Search SCOPUS

Type
Departments

All Years Choose Year From to