Intrinsic dipole Hall effect in twisted MoTe₂: magnetoelectricity and contact-free signatures of topological transitions.

ABSTRACT: We discover an intrinsic dipole Hall effect in a variety of magnetic insulating states at integer fillings of twisted MoTe₂ 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 con

SUBMITTER: Fan FR 

PROVIDER: S-EPMC11393455 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature