Ferromagnetic van der Waals Crystal VI3
Ferromagnetic van der Waals Crystal VI3
复制标题
铁磁范德华晶体 VI3
DOI：
10.1021/jacs.8b13584
复制
发表时间：
2019-04-03
影响因子：
15
通讯作者：
Lei, Hechang
中科院分区：
文献类型：
--
作者：
Tian, Shangjie;Zhang, Jian-Feng;Lei, Hechang
We report structural properties, physical properties, and the electronic structure of van der Waals (vdW) crystal VI3. Detailed analysis reveals that VI3 exhibits a structural transition from monoclinic C2/m to rhombohedral R (3 ) over bar at T-s approximate to 79 K, similar to CrX3 (X = Cl, Br, I). Below T-s, a long-range ferromagnetic (FM) transition emerges at T-c approximate to SO K. The local moment of V in VI3 is close to the high-spin state V3+ ion (S = 1). Theoretical calculations suggest that VI3 may be a Mott insulator with a band gap of about 0.90 eV. In addition, VI3 has a relatively small interlayer binding energy and can be exfoliated easily down to a few layers experimentally. Therefore, VI3 is a candidate for two-dimensional FM semiconductors. It also provides a novel platform to explore 2D magnetism and vdW heterostructures in S = 1 system.
