Linear response of moire heterostructures to a tilted magnetic field

It is widely assumed that 2D van der Waals heterostructures should have no valley response to an in-plane magnetic field. However, several recent experimental results in tilted magnetic fields suggest that this assumption is not correct. In this theoretical work, we compute the magnetic susceptibility and magnetization for graphene-based moire systems in a tilted magnetic field. By comparing our results with experimental measurements of the Hall effect in tilted magnetic fields, we estimate how much of the observed angular dependence of the magnetotransport can be understood within a non-interacting picture.

This work was supported by the Singapore National Research Foundation Investigator Award (NRF-NRFI06-2020-0003)