journal article·2017-08

Modulation of Metal and Insulator States in 2D Ferromagnetic VS2 by van der Waals Interaction Engineering

Yuqiao Guo, Haitao Deng, Xu Sun, Xiuling Li, Jiyin Zhao, Junchi Wu, Wangsheng Chu, Sijia Zhang, Haibin Pan, Xusheng Zheng, Xiaojun Wu, Changqing Jin, Changzheng Wu, Yi Xie

Advanced Materials· Volume 29· Issue 29
Publisher page

Abstract

2D transition‐metal dichalcogenides (TMDCs) are currently the key to the development of nanoelectronics. However, TMDCs are predominantly nonmagnetic, greatly hindering the advancement of their spintronic applications. Here, an experimental realization of intrinsic magnetic ordering in a pristine TMDC lattice is reported, bringing a new class of ferromagnetic semiconductors among TMDCs. Through van der Waals (vdW) interaction engineering of 2D vanadium disulfide (VS2), dual regulation of spin properties and bandgap brings about intrinsic ferromagnetism along with a small bandgap, unravelling the decisive role of vdW gaps in determining the electronic states in 2D VS2. An overall control of the electronic states of VS2 is also demonstrated: bond‐enlarging triggering a metal‐to‐semiconductor electronic transition and bond‐compression inducing metallization in 2D VS2. The pristine VS2 lattice thus provides a new platform for precise manipulation of both charge and spin degrees of freedom in 2D TMDCs availing spintronic applications.
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Research context

OpenAlex topics: 2D Materials and Applications · Graphene research and applications · MXene and MAX Phase Materials

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

Affiliations

Hefei National Laboratory for Physical Sciences at the Microscale, and iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials) University of Science and Technology of China Hefei Anhui 230026 P. R. China

CAS Key Laboratory of Materials for Energy Conversion School of Chemistry and Materials Sciences, and CAS Center for Excellence in Nanoscience University of Science and Technology of China Hefei Anhui 230026 China

National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei Anhui 230029 P. R. China

Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Collaborative Innovation Center of Quantum Matter Beijing 100190 China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Anhui Province

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