Current-Perpendicular-to-Plane Giant Magnetoresistance Effect in van der Waals Heterostructures

Xinlu Li, Yurong Su, Meng Zhu, Fanxing Zheng, Peina Zhang, Jia Zhang, and Jing-Tao Lü
Phys. Rev. Applied 16, 034052 – Published 30 September 2021
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Abstract

Spin-dependent transport in full van der Waals (vdW) giant magnetoresistance (GMR) junctions with the structure of Fe3GeTe2/XTe2/Fe3GeTe2 (X = Pt, Pd) is investigated by using first-principles calculations. The ballistic conductance, magnetoresistance (MR), and resistance-area product (RA) are calculated in a current-perpendicular-to-plane (CPP) geometry. A giant magnetoresistance of around 2000% and RA less than 0.3 Ω µm2 are found in the proposed vdW CPP GMR. In addition, the spin-orbit-coupling effect on transport and anisotropy magnetoresistance (AMR) are also investigated. The calculated AMR is found to be around 20% in the Fe3GeTe2/trilayer PdTe2/Fe3GeTe2 CPP GMR. Both GMR and AMR in the proposed vdW CPP GMR mainly originate from the bulk electronic structure properties of Fe3GeTe2. This work demonstrates a vdW CPP GMR with superior advantages, including perpendicular magnetic anisotropy, large GMR, low RA, and sizable AMR, which may stimulate future experimental explorations and should be appealing for its application in spintronic devices, including magnetic sensors and memory.

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  • Received 26 January 2021
  • Revised 30 April 2021
  • Accepted 3 September 2021

DOI:https://doi.org/10.1103/PhysRevApplied.16.034052

© 2021 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Xinlu Li1, Yurong Su2, Meng Zhu1, Fanxing Zheng1, Peina Zhang1, Jia Zhang1,*, and Jing-Tao Lü1,†

  • 1School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, 430074 Wuhan, China
  • 2Department of Physics, Hubei University, Wuhan 430062, China

  • *jiazhang@hust.edu.cn
  • jtlu@hust.edu.cn

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Issue

Vol. 16, Iss. 3 — September 2021

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