Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fabrication and characterization of an induced GaAs single hole
  transistor   We have fabricated and characterized a single hole transistor in an undoped
AlGaAs-GaAs heterostructure. Our device consists of a p-type quantum dot,
populated using an electric field rather than modulation doping. Low
temperature transport measurements reveal periodic conductance oscillations due
to Coulomb blockade. We find that the low frequency charge noise is comparable
to that in modulation-doped GaAs single electron transistors (SETs), and almost
an order of magnitude better than in silicon SETs.

26
The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys