Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Elastic scattering of surface states on three-dimensional topological
  insulators   Topological insulators as new type of quantum matter materials are
characterized by a full insulating gap in the bulk and gapless edge/surface
states which are protected by time-reversal symmetry. We propose the
interference patterns caused by elastic scattering of defects or impurities are
dominated by surface states at the extremal points on the constant energy
contour. Within such formalism, we summarize our recent theoretical
investigations on elastic scattering of topological surface states by various
imperfections, including the non-magnetic impurities, magnetic impurities,
step-edges, and various other defects, in comparison with recent related
experiments in typical topological materials such as BiSb alloys, Bi$_2$Te$_3$
and Bi$_2$Se$_3$ crystals.

19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
2
The categories of this paper are: math