Hysteretic magnetoresistance and unconventional anomalous Hall effect in the frustrated magnet TmB4

被引：26

作者：

Sunku, Sai Swaroop ^{[1
]}

Kong, Tai ^{[2
,3
]}

Ito, Toshimitsu ^{[4
]}

Canfield, Paul C. ^{[2
,3
]}

Shastry, B. Sriram ^{[5
]}

Sengupta, Pinaki ^{[1
]}

Panagopoulos, Christos ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link 637371, Singapore 639798, Singapore

[2] US DOE, Ames Lab, Ames, IA 50011 USA

[3] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[4] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058562, Japan

[5] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA

来源：

PHYSICAL REVIEW B | 2016年 / 93卷 / 17期

基金：

新加坡国家研究基金会;

关键词：

PHASE-DIAGRAM; FERROMAGNETICS; CHIRALITY; SYSTEM;

D O I：

10.1103/PhysRevB.93.174408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study TmB4, a frustrated magnet on the Archimedean Shastry-Sutherland lattice, through magnetization and transport experiments. The lack of anisotropy in resistivity shows that TmB4 is an electronically three-dimensional system. The magnetoresistance (MR) is hysteretic at low temperature even though a corresponding hysteresis in magnetization is absent. The Hall resistivity shows unconventional anomalous Hall effect (AHE) and is linear above saturation despite a large MR. We propose that complex structures at magnetic domain walls may be responsible for the hysteretic MR and may also lead to the AHE.

引用

页数：5

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