Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transport through the network of topological channels in HgTe based
  quantum well   Topological insulators represent a new quantum state of matter which is
characterized by edge or surface states and an insulating band gap in the bulk.
In a two dimensional (2D) system based on the HgTe quantum well (QW) of
critical width random deviations of the well width from its average value
result in local crossovers from zero gap 2D Dirac fermion system to either the
2D topological insulator or the ordinary insulator, forming a complicated
in-plane network of helical channels along the zero-gap lines. We have studied
experimentally the transport properties of the critical width HgTe quantum
wells near the Dirac point, where the conductance is determined by a
percolation along the zero-gap lines. The experimental results confirm the
presence of percolating conducting channels of a finite width. Our work
establishes the critical width HgTe QW as a promising platform for the study of
the interplay between topology and localization.

31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin