Van der Waals Topological Materials: Moire Materials and Topological Magnets

8:00 am – 10:48 am, Thursday March 20 // Session MAR-Q41 //Anaheim Convention Center, 264B (Level 2)

Chair:: I-Hsuan Kao, Carnegie Mellon University
Topics:
Sponsored by: DMP

Experimental study of intrinsic photocurrents in a 2D magnet

10:00 am – 10:12 am

Presenter: Zumeng Huang (Boston College)

Authors: Mohammad Yahyavi (Nanyang Technological University), Anyuan Gao (Harvard University), Yufei Liu (Harvard University), Tiema Qian (Los Alamos National Lab), Kenji Watanabe (National Institute for Materials Science), Takashi Taniguchi (National Institute for Materials Science), Ni Ni (University of California, Los Angeles), Suyang Xu (Harvard University), Guoqing Chang (Nanyang Technological University), Qiong Ma (Boston College)

Crystal inversion breaking can lead to intrinsic photovoltaic responses without the need for pn junctions. These intrinsic responses can be tuned by controlling the crystal symmetry. While this effect in non-magnetic systems has been widely studied, an intriguing scenario arises when the lattice is inversion symmetric but the inversion symmetry is broken by spin structures in magnetic systems. In this case, the intrinsic photocurrent becomes strongly linked to the magnetic structure and can be controlled by magnetism. We will present our experimental findings on this effect in a 2D van der Waals magnet.

PRESENTATIONS (12)