Anisotropic magnetotransport in tilted magnetic topological semimetals

J Wu; C M Wang

doi:10.1088/1361-648X/abdff5

Anisotropic magnetotransport in tilted magnetic topological semimetals

J Phys Condens Matter. 2021 Mar 10;33(16). doi: 10.1088/1361-648X/abdff5.

Authors

J Wu¹, C M Wang^{1

2

3}

Affiliations

¹ Department of Physics, Shanghai Normal University, Shanghai 200234, People's Republic of China.
² Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, People's Republic of China.
³ Shenzhen Key Laboratory of Quantum Science and Engineering, Shenzhen 518055, People's Republic of China.

PMID: 33498034
DOI: 10.1088/1361-648X/abdff5

Abstract

We systematically investigate the anisotropic magneto-conductivity and planar Hall effect in tilted magnetic topological semimetals in the frame of Kubo formula by considering the vertex correction of velocity. The nonzero anisotropic magneto-conductivity is due to the intrinsic magnetization by magnetic doping rather than the external magnetic field previously studied in literatures. In the scenario, tilt, which is common in band structure, plays a key role in this anisotropic magneto-conductivity. This anisotropic magneto-conductivity completely originates from the band anisotropy. The vertex correction only amends the magnitude, but does not change the qualitative behavior of the longitudinal conductivity. However, the planar Hall conductivity is always zero for tilt along bothxandydirections in vivid contrast to the case arising from an external magnetic field. Our work offers a route to understand the anisotropic magneto-conductivity effect in tilted Weyl semimetals with Zeeman field. It will be helpful to get a deeper understanding of the transport characteristic in tilted topological semimetals.

Keywords: Kubo formula; anisotropic magnetotransport; planar Hall effect; tilt; topological semimetal; vertex correction.