Non-linear Hall effect in three-dimensional Weyl and Dirac semimetals

Autor:	Shvetsov, O. O., Esin, V. D., Timonina, A. V., Kolesnikov, N. N., Deviatov, E. V.
Rok vydání:	2019
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	JETP Letters, 109, 715 (2019)
Druh dokumentu:	Working Paper
DOI:	10.1134/S0021364019110018
Popis:	We experimentally investigate a non-linear Hall effect for three-dimensional WTe$_2$ and Cd$_3$As$_2$ single crystals, representing Weyl and Dirac semimetals, respectively. We observe finite second-harmonic Hall voltage, which depends quadratically on the longitudinal current in zero magnetic field. Despite this observation well corresponds to the theoretical predictions, only magnetic field dependence allows to distinguish the non-linear Hall effect from a thermoelectric response. We demonstrate that second-harmonic Hall voltage shows odd-type dependence on the direction of the magnetic field, which is a strong argument in favor of current-magnetization effects. In contrast, one order of magnitude higher thermopower signal is independent of the magnetic field direction. Comment: minor text correction
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1902.02699 Zobrazit plný text záznamu View this record from Arxiv