Electronic structure of vacancy-type defects in hexagonal boron nitride

Geometric and electronic structures of monolayer hexagonal boron nitride with multi-vacancy

Hexagonal boron nitride (h-BN) is an electrical insulator with a large band gap of 5 eV and a good thermal conductor of which melting point reaches about 3000 °C. Due to these properties, much attention was given to the thermal stability rather than the electrical properties of h-BN experimentally and theoretically. In this study, we report calculations that the electronic structure of monolaye...

Evolution of Irradiation-Induced Vacancy Defects in Boron Nitride Nanotubes.

Irradiation-induced vacancy defects in multiwalled (MW) boron nitride nanotubes (BNNTs) are investigated via in situ high-resolution transmission electron microscope operated at 80 kV, with a homogeneous distribution of electron beam intensity. During the irradiation triangle-shaped vacancy defects are gradually generated in MW BNNTs under a mediate electron current density (30 A cm(-2)), by kn...

Direct Observation of Defects in Hexagonal Boron Nitride Monolayers

1. Department of Materials Science and Engineering, the University of Tennessee, Knoxville, TN 37996, United States 2. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States 3. Department of Electrical Engineering and Computer Science, the University of Tennessee, Knoxville, TN 37996, United States 4. Department of Materials Science and Engi...

Hexagonal boron-nitride nanomesh magnets

Effect of Structural Relaxation on the Electronic Structure of Graphene on Hexagonal Boron Nitride.

We performed calculations of electronic, optical, and transport properties of graphene on hexagonal boron nitride with realistic moiré patterns. The latter are produced by structural relaxation using a fully atomistic model. This relaxation turns out to be crucially important for electronic properties. We describe experimentally observed features such as additional Dirac points and the "Hofstad...