Can I read Strong Field Optical Hall Effect in 2D Weyl Semimetal on EtoBox?

Strong Field Optical Hall Effect in 2D Weyl Semimetal by Farooq, M. Umar; Hashmi, Arqum; Tani, Mizuki; Yabana, Kazuhiro; Ishikawa, Kenichi L.; Huang, Li; Otobe, Tomohito is a scholarly article available to read on EtoBox.

What is Strong Field Optical Hall Effect in 2D Weyl Semimetal about?

The study of interplay between the geometric nature of Bloch electrons and transverse responses under strong field offers new opportunities for optoelectronic applications. Here, we present a comprehensive study of the strong-field response of Weyl Dirac nodes in bilayer T'-WTe2 using time-dependent first-principles formalism. The electron dynamics is explored focusing on the mid-infrared frequency, ranging from the perturbative to nonperturbative regime. In the nonperturbative regime, the high-harmonic generation (HHG) spectra under a strong field clearly exhibit a plateau and energy cutoffs for both longitudinal and anomalous Hall (transverse) currents, with the latter being due to the large interband Berry curvature of the Weyl-Dirac semimetal. For the longitudinal harmonics, the intraband contributions increase with intensity, resulting in a complex interplay between interband polarization and intraband motions. Remarkably, if we take a comprehensive all-band perspective enabled by time-dependent density functional calculations, the anomalous Hall responses are purely attributed to the interband processes, even in the nonperturbative regime, thus Hall HHG can be crucial to unde

Author

Farooq, M. Umar; Hashmi, Arqum; Tani, Mizuki; Yabana, Kazuhiro; Ishikawa, Kenichi L.; Huang, Li; Otobe, Tomohito

Published

2024

Language

EN