journal article·2021-06-01Open access

Correlation of anomalous Hall effect with structural parameters and magnetic ordering in Mn3+xSn1−x thin films

Ju-Young Yoon, Yutaro Takeuchi, Samik DuttaGupta, Yuta Yamane, Shun Kanai, Jun’ichi Ieda, Hideo Ohno, Shunsuke Fukami

AIP Advances· Volume 11· Issue 6

Abstract

We investigate the relationship between structural parameters, magnetic ordering, and the anomalous Hall effect (AHE) of Mn3+xSn1−x (−0.42 ≤ x ≤ +0.23) thin films annealed at various temperatures Ta. The crystal structure changes with x and Ta, and at Ta ≥ 500 °C near the stoichiometric composition (−0.08 ≤ x ≤ +0.04), epitaxial single-phase D019-Mn3+xSn1−x(101̄0) is obtained. At room temperature, a larger AHE is obtained when the single-phase epitaxial Mn3Sn with the lattice constant closer to that of bulk is formed. The temperature dependence of the AHE shows different behaviors depending on Ta and can be explained by considering the variation of magnetic ordering. A close inspection into the temperature and composition dependence suggests a variation of magnetic phase transition temperature with composition and/or a possible correlation between the AHE and Fermi level position with respect to the Weyl points. Our comprehensive study on (101̄0)-oriented epitaxial Mn3Sn thin films would provide the basis for utilizing the unique functionalities of non-collinear antiferromagnetic materials.
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Research context

OpenAlex topics: Magnetic properties of thin films · Magnetic and transport properties of perovskites and related materials · Multiferroics and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University 1 , 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

WPI-Advanced Institute for Materials Research, Tohoku University 2 , 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

Center for Science and Innovation in Spintronics, Tohoku University 3 , 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

Center for Spintronics Research Network, Tohoku University 4 , 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

Frontier Research Institute for Interdisciplinary Sciences, Tohoku University 5 , 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan

Division for the Establishment of Frontier Sciences, Organization for Advanced Studies, Tohoku University 6 , 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

Advanced Science Research Center 7 , 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan

Center for Innovative Integrated Electronic Systems, Tohoku University 8 , 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai 980-0845, Japan

Funding

Japan Society for the Promotion of Science · Iketani Science and Technology Foundation · Research Institute of Electrical Communication, Tohoku University · GP-Spin, Tohoku University

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