Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Improvement of the transport properties of a high-mobility electron
  system by intentional parallel conductance   We present a gating scheme to separate even strong parallel conductance from
the magneto-transport signatures and properties of a two-dimensional electron
system. By varying the electron density in the parallel conducting layer, we
can study the impact of mobile charge carriers in the vicinity of the dopant
layer on the properties of the two-dimensional electron system. It is found
that the parallel conducting layer is indeed capable to screen the remote
ionized impurity potential fluctuations responsible for the fragility of
fractional quantum Hall states.

0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th