Unconventional Hall effect induced by Berry curvature

• 作 者: 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
• 机 构: International Center for Quantum Materials,School of Physics,Peking University,Beijing 100871,China:
• 出 处: 国家科学评论（英文版）
• 发表日期: 2020年12期
• 关键词: Berry curvature topological material Hall effect tilted Weyl semimetal Berry pha

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 ZrTes 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.