biostudies-literatureCai JGordon and Betty Moore Foundation (Gordon E. and Betty I. Moore Foundation)NSF | Directorate for Mathematical & Physical Sciences | Division of Materials Research (DMR)NSF | Directorate for Mathematical & Physical Sciences | Division of Materials ResearchUW | Clean Energy InstituteHellman FoundationDOE | SC | Basic Energy Sciences (BES)United States Department of Defense | United States Air Force | AFMC | Air Force Office of Scientific ResearchGordon and Betty Moore FoundationUnited States Department of Defense | United States Air Force | AFMC | Air Force Office of Scientific Research (AF Office of Scientific Research)DOE | SC | Basic Energy Sciences1668https://www.ebi.ac.uk/biostudies/studies/S-EPMC8964814biostudies-literatureUnknown13(1)The interplay between band topology and magnetism can give rise to exotic states of matter. For example, magnetically doped topological insulators can realize a Chern insulator that exhibits quantized Hall resistance at zero magnetic field. While prior works have focused on ferromagnetic systems, little is known about band topology and its manipulation in antiferromagnets. Here, we report that MnBi₂Te₄ is a rare platform for realizing a canted-antiferromagnetic (cAFM) Chern insulator with electrical control. We show that the Chern insulator state with Chern number C = 1 appears as the AFM to canted-AFM phase transition happens. The Chern insulator state is further confirmed by observing the unusual transition of the C = 1 state in the cAFM phase to the C = 2 orbital qNature communicationsElectric control of a canted-antiferromagnetic Chern insulator.PMC8964814GBMF9063DMR-1719797DE-SC0019443DMR-2004701FA9550-21-1-0177Yan JWang CCai JHe MLin ZFei ZChu JHCui YTCobden DOvchinnikov DSong TChang CZXiao DXu XfalseElectric control of a canted-antiferromagnetic Chern insulator.The interplay between band topology and magnetism can give rise to exotic states of matter. For example, magnetically doped topological insulators can realize a Chern insulator that exhibits quantized Hall resistance at zero magnetic field. While prior works have focused on ferromagnetic systems, little is known about band topology and its manipulation in antiferromagnets. Here, we report that MnBi₂Te₄ is a rare platform for realizing a canted-antiferromagnetic (cAFM) Chern insulator with electrical control. We show that the Chern insulator state with Chern number C = 1 appears as the AFM to canted-AFM phase transition happens. The Chern insulator state is further confirmed by observing the unusual transition of the C = 1 state in the cAFM phase to the C = 2 orbital q2022-01-01T00:00:00Z2022 Mar2025-04-25T18:03:27.956Z2025-04-25T18:03:27.956ZS-EPMC89648143535190010.1038/s41467-022-29259-8