Bulletin of the American Physical Society
APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011; Dallas, Texas
Abstract: C1.00270 : Ab initio study of adatom adsorption on topological insulator thin film
Author:
Recently topological insulator has attracted great attention due to its
intriguing electronic and transport properties. Topological insulator has
bulk energy gap but conducting surface states which are chiral with a linear
energy-momentum relation. These surface states are robust against external
perturbations as they are protected by the time reversal symmetry. We
studied the electronic structure of topological insulator Bi$_{2}$Te$_{3}$
thin film and investigated how it is modified upon the adsorption of single
atomic impurities using first-principles calculations. We chose nitrogen
(N), oxygen (O), sodium (Na) and cobalt (Co) atoms to study their adsorption
on top of Bi$_{2}$Te$_{3 }$surface. We investigated the effect of
non-magnetic and magnetic impurities on the surface states, and the band
splitting due to the inversion symmetry-breaking by the Rashba field.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.C1.270
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