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

TitleHysteretic magnetoresistance and unconventional anomalous Hall effect in the frustrated magnet TmB4
Publication TypeJournal Article
Year of Publication2016
AuthorsSunku, SS, Kong, T, Ito, T, Canfield, PC, Shastry, BS, Sengupta, P, Panagopoulos, C
JournalPhysical Review B
Volume93
Pagination174408
Date Published05
Type of ArticleArticle
ISBN Number2469-9950
Accession NumberWOS:000375990700002
Keywordschirality, ferromagnetics, phase-diagram, physics, system
Abstract

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.

DOI10.1103/PhysRevB.93.174408
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Complex States

Alternate JournalPhys. Rev. B