Layer Materials in the Flatland: Twisted Geometry and the Strain Effects

Friday, May 19, 2017 - 9:20am - 9:40am
Keller 3-180
Shiang Fang (Harvard University)
The two-dimensional layered materials are very interesting classes of materials, which can host a variety of physics properties such as topological phases, charge density waves, superconductivity and magnetism. To overcome the theoretical challenges in simulating the applications with these materials, we employ the Wannier transformation technique to bridge the ab initio density functional theory calculations and the efficient tight-binding models. Based on these models, we study the electronic coupling between layers in the twisted geometry, and the effects of strain in each layers.