Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quasi one-dimensional transport in single GaAs/AlGaAs core-shell
  nanowires   We present an original approach to fabricate single GaAs/AlGaAs core-shell
nanowire with robust and reproducible transport properties. The core-shell
structure is buried in an insulating GaAs overlayer and connected as grown in a
two probe set-up using the highly doped growth substrate and a top diffused
contact. The measured conductance shows a non-ohmic behavior with temperature
and voltage-bias dependences following power laws, as expected for a quasi-1D
system.

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The categories of this paper are: q-alg
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The categories of this paper are: econ
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
3
The categories of this paper are: physics