MoB2:a new multifunctional transition metal diboride monolayer
arXiv:1910.07661 · doi:10.1088/1361-648X/ab4e6e
Abstract
Several layered transition metal borides can now be realized by a simple and general fabrication method [Fokwa et al.,Adv. Mater. 2018, 30, 1704181],inspiring our interest to transition metal borides monolayer. Here, we predict a new two-dimensional (2D) transition metal diboride MoB2 monolayer (ML) and study its intrinsic mechanical, thermal, electronic, and transport properties. The MoB2 ML has isotropic mechanic properties along the zigzag and armchair directions with a large Young's stiffness, and has an ultralow room-temperature thermal conductivity. The Mo atoms dominate the metallic nature of MoB2 ML. It shows an obvious electrical anisotropy and a current-limiting behavior. Our findings suggest that MoB2 ML is a promising multifunctional material used in ultrathin high-strength mechanical materials, heat insulating materials, electrical-anisotropy-based materials, and current limiters. It is helpful for the experimentalists to further prepare and utilize the transition metal diboride 2D materials.
7 figures
References in corpus (4)
- Electric Field Effect in Atomically Thin Carbon Films
- Role of Symmetry in the Transport Properties of Graphene Nanoribbons under Bias
- How to Characterize Thermal Transport Capability of 2D Materials Fairly? - Sheet Thermal Conductance and the Choice of Thickness
- Unveiling the Electric-current-limiting and Photodetection Effect in Two-dimensional Hydrogenated Borophene