Ferromagnetism in 2D Vanadium Diselenide

Xiong Wang; Dian Li; Zejun Li; Changzheng Wu; Chi-Ming Che; Gang Chen; Xiaodong Cui

doi:10.1021/acsnano.1c05232

Ferromagnetism in 2D Vanadium Diselenide

ACS Nano. 2021 Oct 26;15(10):16236-16241. doi: 10.1021/acsnano.1c05232. Epub 2021 Sep 28.

Authors

Xiong Wang¹, Dian Li¹, Zejun Li², Changzheng Wu², Chi-Ming Che³, Gang Chen¹, Xiaodong Cui¹

Affiliations

¹ Physics Department, University of Hong Kong, Hong Kong 999077, People's Republic of China.
² Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
³ Department of Chemistry, State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, People's Republic of China.

PMID: 34581581
DOI: 10.1021/acsnano.1c05232

Abstract

Two-dimensional (2D) van der Waals ferromagnets carry the promise of ultimately miniature spintronics and information storage devices. Among the 2D ferromagnets, all inherit the magnetic ordering from their bulk ancestors. Here we report a 2D ferromagnetic semiconductor at room temperature, 2H-phase vanadium diselenide (VSe₂), which shows ferromagnetic at the 2D form only. This 2D ferromagnetic semiconductor manifests an enhanced magnetic ordering owing to structural anisotropy at the 2D limit.

Keywords: 2D magnet; 2D semiconductor; low dimensional ferromagnetism; magnetic circular dichroism microscopy; structural anisotropy; vanadium diselenide.