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Intrinsic dipole Hall effect in twisted MoTe2: magnetoelectricity and contact-free signatures of topological transitions
Fan, Feng Ren1,2; Xiao, Cong2,3; Yao, Wang1,2
2024-12-01
Source PublicationNature Communications
ISSN2041-1723
Volume15Issue:1Pages:7997
Abstract

We discover an intrinsic dipole Hall effect in a variety of magnetic insulating states at integer fillings of twisted MoTe moiré superlattice, including topologically trivial and nontrivial ferro-, antiferro-, and ferri-magnetic configurations. The dipole Hall current, in linear response to in-plane electric field, generates an in-plane orbital magnetization M along the field, through which an AC field can drive magnetization oscillation up to THz range. Upon the continuous topological phase transitions from trivial to quantum anomalous Hall states in both ferromagnetic and antiferromagnetic configurations, the dipole Hall current and M have an abrupt sign change, enabling contact-free detection of the transitions through the magnetic stray field. In configurations where the linear response is forbidden by symmetry, the dipole Hall current and M appear as a crossed nonlinear response to both in-plane and out-of-plane electric fields. These magnetoelectric phenomena showcase fascinating functionalities of insulators from the interplay between magnetism, topology, and electrical polarization.

DOI10.1038/s41467-024-52314-5
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:001312845900001
PublisherNATURE PORTFOLIO, HEIDELBERGER PLATZ 3, BERLIN 14197, GERMANY
Scopus ID2-s2.0-85203810775
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Citation statistics
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorYao, Wang
Affiliation1.New Cornerstone Science Laboratory, Department of Physics, University of Hong Kong, Hong Kong
2.HKU-UCAS Joint Institute of Theoretical and Computational Physics at Hong Kong, Hong Kong
3.Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao
Recommended Citation
GB/T 7714
Fan, Feng Ren,Xiao, Cong,Yao, Wang. Intrinsic dipole Hall effect in twisted MoTe2: magnetoelectricity and contact-free signatures of topological transitions[J]. Nature Communications, 2024, 15(1), 7997.
APA Fan, Feng Ren., Xiao, Cong., & Yao, Wang (2024). Intrinsic dipole Hall effect in twisted MoTe2: magnetoelectricity and contact-free signatures of topological transitions. Nature Communications, 15(1), 7997.
MLA Fan, Feng Ren,et al."Intrinsic dipole Hall effect in twisted MoTe2: magnetoelectricity and contact-free signatures of topological transitions".Nature Communications 15.1(2024):7997.
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