Publication : t19/165
Surface Green's functions and boundary modes using impurities: Weyl semimetals and topological insulators
Pinon S. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)Kaladzhyan.V (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Bena C. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Abstract:Année de publication : 2019
In this work we provide a new direct and non-numerical technique to obtain the surface Green's functions for three-dimensional systems. This technique is based on the ideas presented in Phys. Rev. B 100, 081106(R), in which we start with an infinite system and model the boundary using a plane-like infinite-amplitude potential. Such a configuration can be solved exactly using the T-matrix formalism. We apply our method to calculate the surface Green's function and the corresponding Fermi-arc states for Weyl semimetals. We also apply the technique to systems of lower dimensions, such as Kane-Mele and Chern insulator models, to provide a more efficient and non-numerical method to describe the formation of edge states.
Preprint : arXiv:arXiv:1906.08268
Langue : Anglais
Fichier(s) à télécharger :
publi.pdf
