Ultrathin Nanosheets of Vanadium Diselenide: A Metallic Two-Dimensional Material with Ferromagnetic Charge-Density-Wave Behavior

摘要

Over the past few years, graphene, which consists of a single layer of carbon atoms in a two-dimensional (2D) planar arranged as a honeycomb lattice structure, has attracted great attention owing to its unique and fascinating physical properties. Meanwhile, inorganic 2D materials with graphene-like structure, especially those ultrathin nanosheets of transition metal dichalcogenide (TMD) with single or few atomic layers, have also been extensively studied owing to their special structures and rich electronic properties catering for intriguing applications such as energy storage and conversion, sensors, and optoelectronic and spinelectronic devices. Representive TMD ultrathin nanosheets of TiS2, TiSe2, MoS2, MoSe2, WS2,WSe2, and VS2 were gradually unraveled in recent years. However, it is still a major challenge to integrate exotic electronic charge and spin properties in the 2D TMD materials, which are intriguing possibilities for future-generation nanoelec-tronics. Therefore, developing a new type of 2D TMD materials with exotic electronic charge and spin properties beyond current systems, is extremely urgent.