Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hopping conduction in strongly insulating states of a diffusive bent
  quantum Hall junction   Transport studies of a bent quantum Hall junction at integer filling factors
show strongly insulating states at higher fields. In this paper we analyze the
strongly insulating behavior as a function of temperature T and dc bias V, in
order to classify the localization mechanisms responsible for the insulating
state. The temperature dependence suggests a crossover from activated
nearest-neighbor hopping at higher T to variable-range hopping conduction at
lower T. The base temperature electric field dependence is consistent with 1D
variable-range hopping conduction. We observe almost identical behavior at
filling factors 1 and 2, and discuss how the bent quantum Hall junction
conductance appears to be independent of the bulk spin state. Various models of
1D variable-range hopping which either include or ignore interactions are
compared, all of which are consistent with the basic model of disorder coupled
counter-propagating quantum Hall edges.

3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con