Isolantes topológicos: Nanofitas de Siliceno sob campo elétrico

Abstract

This monograph sought to understand how topological insulators behave, a class of material that has intriguing and nontrivial physical properties. The structure of the monograph follows an introduction to the subjects that motivated the discovery of topological insulators, through a historical survey based on the Hall effect and addressing basic concepts of solid state physics. It is also contained the main subject of the work of this monograph, in which we study materials such as graphene and silicene. Finally we have the study of the quantum phase transition through critical phenomena, where the analysis of the zig-zag nano-ribbon band structure under an electric field through computational simulations is performed.