Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonlocal transport in a hybrid two-dimensional topological insulator   We study nonlocal resistance in an H-shaped two-dimensional HgTe/CdTe quantum
well consist of injector and detector, both of which can be tuned in the
quantum spin Hall or metallic spin Hall regime. Because of strong spin-orbit
interaction, there always exist spin Hall effect and the nonlocal resistance in
HgTe/CdTe quantum well. We find that when both detector and injector are in the
quantum spin Hall regime, the nonlocal resistance is quantized at
$0.25\frac{h}{e^2}$, which is robust against weak disorder scattering and small
magnetic field. While beyond this regime, the nonlocal resistance decreases
rapidly and will be strongly suppressed by disorder and magnetic field. In the
presence of strong magnetic field, the quantum spin Hall regime will be
switched into the quantum Hall regime and the nonlocal resistance will
disappear. The nonlocal signal and its various manifestation in different
hybrid regimes originate from the special band structure of HgTe/CdTe quantum
well, and can be considered as the fingerprint of the helical quantum spin Hall
edge states in two-dimensional topological insulator.

7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex