Controllable dimensionality conversion between 1D and 2D CrCl3 magnetic nanostructures

Shuangzan Lu, Deping Guo, Zhengbo Cheng, Yanping Guo, Cong Wang, Jinghao Deng, Yusong Bai, Cheng Tian, Linwei Zhou, Youguo Shi, Jun He (), Wei Ji () and Chendong Zhang ()
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Shuangzan Lu: Wuhan University
Deping Guo: Renmin University of China
Zhengbo Cheng: Wuhan University
Yanping Guo: Wuhan University
Cong Wang: Renmin University of China
Jinghao Deng: Wuhan University
Yusong Bai: Wuhan University
Cheng Tian: Chinese Academy of Sciences
Linwei Zhou: Renmin University of China
Youguo Shi: Chinese Academy of Sciences
Jun He: Wuhan University
Wei Ji: Renmin University of China
Chendong Zhang: Wuhan University

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract The fabrication of one-dimensional (1D) magnetic systems on solid surfaces, although of high fundamental interest, has yet to be achieved for a crossover between two-dimensional (2D) magnetic layers and their associated 1D spin chain systems. In this study, we report the fabrication of 1D single-unit-cell-width CrCl3 atomic wires and their stacked few-wire arrays on the surface of a van der Waals (vdW) superconductor NbSe2. Scanning tunneling microscopy/spectroscopy and first-principles calculations jointly revealed that the single wire shows an antiferromagnetic large-bandgap semiconducting state in an unexplored structure different from the well-known 2D CrCl3 phase. Competition among the total energies and nanostructure-substrate interfacial interactions of these two phases result in the appearance of the 1D phase. This phase was transformable to the 2D phase either prior to or after the growth for in situ or ex situ manipulations, in which the electronic interactions at the vdW interface play a nontrivial role that could regulate the dimensionality conversion and structural transformation between the 1D-2D CrCl3 phases.

Date: 2023
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DOI: 10.1038/s41467-023-38175-4

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