Magnetic-field modulation of topological electronic state and emergent magneto-transport in a magnetic Weyl semimetal  

作　　者：Jianlei Shen Jiacheng Gao Changjiang Yi Meng Li Shen Zhang Jinying Yang Binbin Wang Min Zhou Rongjin Huang Hongxiang Wei Haitao Yang Youguo Shi Xiaohong Xu Hong-Jun Gao Baogen Shen Geng Li Zhijun Wang Enke Liu 

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [2]Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education&Research Institute of Materials Science,Shanxi Normal University,Taiyuan 030000,China [3]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [4]Key Laboratory of Cryogenics,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China [5]Songshan Lake Materials Laboratory,Dongguan 523808,China [6]Ningbo Institute of Materials Technology&Engineering,Chinese Academy of Sciences,Ningbo,Zhejiang 315201,China [7]Ganjiang Innovation Academy,Chinese Academy of Sciences,Ganzhou,Jiangxi 341000,China

出　　处：《The Innovation》2023年第2期78-82,77,共6页创新（英文）

基　　金：supported by the National Key R&D Program of China(nos.2022YFA1403800,2022YFA1403400,2019YFA0704900);the Fundamental Science Center of the National Natural Science Foundation of China(no.52088101);the Synergetic Extreme Condition User Facility(SECUF);the Beijing Natural Science Foundation(no.Z190009);the National Natural Science Foundation of China(nos.11974394,12174426,12104280,and 12004416);the Strategic Priority Research Program(B)of the Chinese Academy of Sciences(CAS)(XDB33000000);the Key Research Program of CAS(no.ZDRW-CN-2021-3);the CAS Project for Young Scientists in Basic Research(YSBR-003);the Scientific Instrument Developing Project of CAS(no.ZDKYYQ20210003);the Basic Research Plan of Shanxi Province(no.20210302124160).

摘　　要：The modulation of topological electronic state by an external magnetic field is highly desired for condensed-matter physics.Schemes to achieve this have been proposed theoretically,but few can be realized experimentally.Here,combining transverse transport,theoretical calculations,and scanning tunneling microscopy/spectroscopy(STM/S)investigations,we provide an observation that the topological electronic state,accompanied by an emergent magneto-transport phenomenon,was modulated by applying magnetic field through induced non-collinear magnetism in the magnetic Weyl semimetal EuB6.A giant unconventional anomalous Hall effect(UAHE)is found during the magnetization re-orientation from easy axes to hard ones in magnetic field,with a UAHE peak around the low field of 5 kOe.

关 键 词：TOPOLOGICAL electronic state 

分 类 号：O46[理学—电子物理学]