Anomalous Hall effect in noncollinear antiferromagnetic Mn3NiN thin films

Boldrin, D. et al. (2019) Anomalous Hall effect in noncollinear antiferromagnetic Mn3NiN thin films. Physical Review Materials, 3(9), 094409. (doi: 10.1103/physrevmaterials.3.094409)

Abstract

We have studied the anomalous Hall effect (AHE) in strained thin films of the frustrated antiferromagnet Mn3NiN. The AHE does not follow the conventional relationships with magnetization or longitudinal conductivity and is enhanced relative to that expected from the magnetization in the antiferromagnetic state below TN=260K. This enhancement is consistent with origins from the noncollinear antiferromagnetic structure, as the latter is closely related to that found in Mn3Ir and Mn3Pt where a large AHE is induced by the Berry curvature. As the Berry-phase-induced AHE should scale with spin-orbit coupling, yet larger AHE may be found in other members of the chemically flexible Mn3AN structure.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: McComb, Dr David and Boldrin, Dr David
• Authors: Boldrin, D., Samathrakis, I., Zemen, J., Mihai, A., Zou, B., Johnson, F., Esser, B. D., McComb, D., Petrov, P. K., Zhang, H., and Cohen, L. F.
• College/School: College of Science and Engineering > School of Chemistry; College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review Materials
• Publisher: American Physical Society
• ISSN: 2475-9953
• ISSN (Online): 2475-9953
• Copyright Holders: Copyright © 2019 2019 American Physical Society
• First Published: First published in 3(9):094409
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher