Quasi-1D van der Waals Antiferromagnetic CrZr4 Te14 with Large In-Plane Anisotropic Negative Magnetoresistance

Yuqiang Fang; Ke Yang; Enze Zhang; Shanshan Liu; Zehao Jia; Yuda Zhang; Hua Wu; Faxian Xiu; Fuqiang Huang

doi:10.1002/adma.202200145

Quasi-1D van der Waals Antiferromagnetic CrZr₄ Te₁₄ with Large In-Plane Anisotropic Negative Magnetoresistance

Adv Mater. 2022 Jun;34(24):e2200145. doi: 10.1002/adma.202200145. Epub 2022 May 16.

Authors

Yuqiang Fang¹, Ke Yang², Enze Zhang³, Shanshan Liu³, Zehao Jia^{3

4}, Yuda Zhang^{3

4}, Hua Wu^{4

5

6}, Faxian Xiu^{3

4

7

8}, Fuqiang Huang^{1

9}

Affiliations

¹ State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics Chinese Academy of Sciences, Shanghai, 200050, P. R. China.
² College of Science, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China.
³ State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai, 200433, P. R. China.
⁴ Shanghai Qi Zhi Institute, Shanghai, 200232, P. R. China.
⁵ Laboratory for Computational Physical Sciences (MOE), State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai, 200433, P. R. China.
⁶ Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, P. R. China.
⁷ Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai, 200433, China.
⁸ Shanghai Research Center for Quantum Sciences, Shanghai, 201315, China.
⁹ State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China.

PMID: 35338784
DOI: 10.1002/adma.202200145

Abstract

The discovery of 2D van der Waals (vdW) magnetic materials is of great significance to explore intriguing 2D magnetic physics and develop innovative spintronic devices. In this work, a new quasi-1D vdW layered compound CrZr₄ Te₁₄ is successfully synthesized. Owing to the existence of 1D [CrTe₂ ] and [ZrTe₃ ] chains along the b-axis, CrZr₄ Te₁₄ crystals show strong anisotropy of phonon vibrations, electrical transport, and magnetism. Density functional theory calculations reveal the ferromagnetic (FM) coupling within the [CrTe₂ ] chain, while the interchain and interlayer couplings are both weakly antiferromagnetic (AF). Notably, a large intrinsic negative magnetoresistance (nMR) of -56% is achieved at 2 K under 9 T, and the in-plane anisotropic factor of nMR can reach up to 8.2 in the CrZr₄ Te₁₄ device. The 1D FM chains and anisotropic nMR effect make CrZr₄ Te₁₄ an interesting platform for exploring novel polarization-sensitive spintronics.

Keywords: 2D van der Waals magnetic materials; CrZr 4Te 14; quasi-1D ferromagnetic CrTe 2 chain.

Abstract

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