Magnetotransport induced by anomalous Hall effect

被引：7

作者：

Zhao, Jiaji ^{[1
]}

Jiang, Bingyan ^{[1
]}

Yang, Jinying ^{[2
,3
]}

Wang, Lujunyu ^{[1
]}

Shi, Hengjie ^{[1
]}

Tian, Guang ^{[1
]}

Li, Zhilin ^{[2
]}

Liu, Enke ^{[2
]}

Wu, Xiaosong ^{[1
,4
,5
,6
]}

机构：

[1] Peking Univ, Frontiers Sci Ctr Nanooptoelectron, State Key Lab Artificial Microstruct & Mesoscop Ph, Beijing 100871, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

[4] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

[5] Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China

[6] Peking Univ, Yangtze Delta Inst Optoelect, Nantong 226010, Jiangsu, Peoples R China

来源：

PHYSICAL REVIEW B | 2023年 / 107卷 / 06期

关键词：

ANTIFERROMAGNET;

D O I：

10.1103/PhysRevB.107.L060408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In a magnetic metal, the Hall resistance is generally taken to be the sum of the ordinary Hall resistance and the anomalous Hall resistance. Here it is shown that this empirical relation is no longer valid when either the ordinary Hall angle or the anomalous Hall angle is not small. Using the proper conductivity relation, we reveal an unexpected magnetoresistance (MR) induced by the anomalous Hall effect (AHE). A B-linear MR arises and the sign of the slope depends on the sign of the anomalous Hall angle, giving rise to a characteristic bowtie shape. The Hall resistance in a single-band system can exhibit a nonlinearity which is usually considered as a character-istic of a two-band system. A B-symmetric component appears in the Hall. These effects reflect the fundamental difference between the ordinary Hall effect and the AHE. Furthermore, we experimentally reproduce the unusual MR and Hall reported before in Co3Sn2S2 and show that these observations can be well explained by the proposed mechanism. MR often observed in quantum anomalous Hall insulators provides further confirmation of the picture. The effect may also account for the large MR observed in nonmagnetic three-dimensional topological Dirac semimetals.

引用

页数：6