Translator Disclaimer
Paper
14 September 2018 Detection of the anomalous velocity and anomalous Hall effect in GaAs via free-space THz spectroscopy
Author Affiliations +
Abstract
The anomalous velocity causes spin-polarized carriers to move perpendicular to an electric or parallel to a magnetic driving field. It is at the origin of the spin Hall and anomalous Hall effects. Here, we employ time-domain THz spectroscopy to study the anomalous velocity and the anomalous Hall effect, both of which are optically induced in GaAs, on a sub-picosecond time scale. Our results not only enable a distinction between intrinsic (Berry curvature) and extrinsic (scattering) effects but also demonstrate an inversion of anomalous Hall currents versus excitation photon energy.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mark Bieler, Christian B. Schmidt, Shekhar Priyadarshi, and Klaus Pierz "Detection of the anomalous velocity and anomalous Hall effect in GaAs via free-space THz spectroscopy", Proc. SPIE 10756, Terahertz Emitters, Receivers, and Applications IX, 107560L (14 September 2018); https://doi.org/10.1117/12.2319164
PROCEEDINGS
9 PAGES


SHARE
Advertisement
Advertisement
Back to Top