Impurity-induced states on the surface of 3D topological insulators
Materials Science
2013-11-25 v3 Disordered Systems and Neural Networks
Abstract
We calculate the modification of the local electronic structure caused by a local impurity on the surface of a 3D Topological Insulator. We find that the LDOS around the Dirac point of the electronic spectrum at the surface is significantly disrupted near the impurity by the creation of low-energy resonance state(s) -- however, this is not sufficient to (locally) destroy the Dirac point. We also calculate the non-trivial spin textures created near the magnetic impurities and discover anisotropic RKKY coupling between them.
Keywords
Cite
@article{arxiv.0910.4604,
title = {Impurity-induced states on the surface of 3D topological insulators},
author = {Rudro R. Biswas and Alexander V. Balatsky},
journal= {arXiv preprint arXiv:0910.4604},
year = {2013}
}
Comments
Final published version