Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Suppression of the Spectral Weight of Topological Surface States on the
  Nanoscale via Local Symmetry Breaking   In topological crystalline insulators the topological conducting surface
states are protected by crystal symmetry, in principle making it possible to
pattern nanoscale insulating and conductive motifs solely by breaking local
symmetries on an otherwise homogenous, single-phase material. We show using
scanning tunneling microscopy/spectroscopy that defects that break local
symmetry of SnTe suppress electron tunneling over an energy range as large as
the bulk band gap, an order of magnitude larger than that produced globally via
magnetic fields or uniform structural perturbations. Complementary ab initio
calculations show how local symmetry breaking obstructs topological surface
states as shown by a threefold reduction of the spectral weight of the
topological surface states. The finding highlights the potential benefits of
manipulating the surface morphology to create devices that take advantage of
the unique properties of topological surface states and can operate at
practical temperatures.

19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc