Magnetic-field modulation of topological electronic state and emergent magneto-transport in a magnetic Weyl semimetal.

ABSTRACT: The modulation of topological electronic state by an external magnetic field is highly desired for condensed-matter physics. Schemes to achieve this have been proposed theoretically, but few can be realized experimentally. Here, combining transverse transport, theoretical calculations, and scanning tunneling microscopy/spectroscopy (STM/S) investigations, we provide an observation that the topological electronic state, accompanied by an emergent magneto-transport phenomenon, was modulated by applying magnetic field through induced non-collinear magnetism in the magnetic Weyl semimetal EuB₆. A giant unconventional anomalous Hall effect (UAHE) is found during the magnetization re-orientation from easy axes to hard ones in magnetic field, with a UAHE peak around the low field of 5

SUBMITTER: Shen J 

PROVIDER: S-EPMC10009535 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature