Magnetotransport properties of Cr1−δTe thin films with strong perpendicular magnetic anisotropy

L. Zhou; J. S. Chen; Z. Z. Du; X. S. He; B. C. Ye; G. P. Guo; H. Z. Lu; G. Wang; H. T. He

doi:10.1063/1.5011405

AIP Advances (Dec 2017)

Magnetotransport properties of Cr1−δTe thin films with strong perpendicular magnetic anisotropy

L. Zhou,
J. S. Chen,
Z. Z. Du,
X. S. He,
B. C. Ye,
G. P. Guo,
H. Z. Lu,
G. Wang,
H. T. He

Affiliations

L. Zhou: Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China
J. S. Chen: Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China
Z. Z. Du: Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China
X. S. He: Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China
B. C. Ye: Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China
G. P. Guo: Key Laboratory of Quantum Information, CAS, University of Science and Technology of China, Hefei 230026, China
H. Z. Lu: Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China
G. Wang: Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China
H. T. He: Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong 518055, China

DOI: https://doi.org/10.1063/1.5011405
Journal volume & issue: Vol. 7, no. 12
pp. 125116 – 125116-8

Abstract

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P-type ferromagnetic Cr1-δTe thin films with the Curie temperature of 170K were epitaxially grown on GaAs substrate. Low-temperature magnetotransport study reveals that the film has a strong perpendicular magnetic anisotropy (PMA) and an anisotropic magnetoresistance (AMR) ratio up to 8.1%. Furthermore, reduced anomalous Hall effect is observed at low temperatures in Cr1-δTe, suggesting the possible crossover of the contribution to AHE from the intrinsic mechanism to extrinsic skew scattering. Distinctive from conventional transition metal ferromagnets, the AMR ratio is also greatly suppressed at low temperatures. Our work demonstrates that epitaxial Cr1-δTe films are interesting platforms for studying the physics underlying the strong PMA and large AMR.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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