Unconventional Hall effect induced by Berry curvature

Jun Ge; Da Ma; Yanzhao Liu; Huichao Wang; Yanan Li; Jiawei Luo; Tianchuang Luo; Ying Xing; Jiaqiang Yan; David Mandrus; Haiwen Liu; X C Xie; Jian Wang

doi:10.1093/nsr/nwaa163

Unconventional Hall effect induced by Berry curvature

Natl Sci Rev. 2020 Jul 15;7(12):1879-1885. doi: 10.1093/nsr/nwaa163. eCollection 2020 Dec.

Authors

Jun Ge¹, Da Ma¹, Yanzhao Liu¹, Huichao Wang¹, Yanan Li¹, Jiawei Luo¹, Tianchuang Luo¹, Ying Xing¹, Jiaqiang Yan², David Mandrus², Haiwen Liu³, X C Xie¹, Jian Wang¹

Affiliations

¹ International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.
² Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA.
³ Center for Advanced Quantum Studies, Department of Physics, Beijing Normal University, Beijing 100875, China.

Abstract

Berry phase and Berry curvature play a key role in the development of topology in physics and do contribute to the transport properties in solid state systems. In this paper, we report the finding of novel nonzero Hall effect in topological material ZrTe₅ flakes when the in-plane magnetic field is parallel and perpendicular to the current. Surprisingly, both symmetric and antisymmetric components with respect to magnetic field are detected in the in-plane Hall resistivity. Further theoretical analysis suggests that the magnetotransport properties originate from the anomalous velocity induced by Berry curvature in a tilted Weyl semimetal. Our work not only enriches the Hall family but also provides new insights into the Berry phase effect in topological materials.

Keywords: Berry curvature; Berry phase effect; Hall effect; tilted Weyl semimetal; topological material.