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

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

We study TmB, 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 th...

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Bibliographic Details
Main Authors: Sunku, Sai Swaroop, Kong, Tai, Ito, Toshimitsu, Canfield, Paul C., Shastry, B. Sriram, Sengupta, Pinaki, Panagopoulos, Christos
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2018
Subjects:
DRNTU::Science::Physics
Frustrated Magnetism
Anomalous Hall Effect
Online Access:https://hdl.handle.net/10356/89809
http://hdl.handle.net/10220/46385
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Institution: Nanyang Technological University
Language: English
Description
Summary:We study TmB, 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.

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