Magnetoresistance hysteresis in topological Kondo insulator SmB6 nanowire

Kong, Ling-Jian1; Zhou, Yong2; Song, Hua-Ding1; Yu, Da-Peng2; Liao, Zhi-Min1,3,4

2019

10.1088/1674-1056/ab3a89

Chinese Physics B   影响因子和分区

20583834

1741-4199

SmB6, a topological Kondo insulator, with a gapped bulk state and metallic surface state has aroused great research interest. Here, we report an exotic hysteresis behavior of magnetoresistance in individual SmB6 nanowire in a temperature range in which both surface and bulk states contribute to the total conductance. Under a magnetic field parallel to the SmB6 nanowire, the resistance suddenly increases at the turning point from up-sweep to down-sweep of the magnetic field. The magnetoresistance hysteresis loops are well consistent with the magnetocaloric effect. Our results suggest that the SmB6 nanowires possess potential applications in the magnetic cooling technology.
© 2019 Chinese Physical Society and IOP Publishing Ltd.

topological Kondo insulator magnetocaloric effect magnetoresistance hysteresis

SCI ; EI

英语

其他

National Basic Research Program of China (973 Program)[2016YFA0300802] ; National Natural Science Foundation of China[61825401]

Physics

Physics, Multidisciplinary

WOS:000497720500001

Institute of Physics Publishing

20195007804922

Hysteresis ; Magnetic materials ; Magnetocaloric effects ; Magnetoresistance ; Nanowires ; Samarium compounds ; Topology

Magnetism: Basic Concepts and Phenomena:701.2 ; Magnetic Materials:708.4 ; Nanotechnology:761 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Solid State Physics:933 ; Systems Science:961

Web of Science

1.State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing; 100871, China
2.Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen; 518055, China
3.Beijing Key Laboratory of Quantum Devices, Peking University, Beijing; 100871, China
4.Collaborative Innovation Center of Quantum Matter, Beijing; 100871, China

Kong, Ling-Jian,Zhou, Yong,Song, Hua-Ding,et al. Magnetoresistance hysteresis in topological Kondo insulator SmB6 nanowire[J]. Chinese Physics B,2019,28(10).

Kong, Ling-Jian,Zhou, Yong,Song, Hua-Ding,Yu, Da-Peng,&Liao, Zhi-Min.(2019).Magnetoresistance hysteresis in topological Kondo insulator SmB6 nanowire.Chinese Physics B,28(10).

Kong, Ling-Jian,et al."Magnetoresistance hysteresis in topological Kondo insulator SmB6 nanowire".Chinese Physics B 28.10(2019).