Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Radio-frequency reflectometry on large gated 2-dimensional systems   We have embedded an AlGaAs/GaAs based, gated 2D hole system (2DHS) into an
impedance transformer $LC$ circuit, and show that by using radio-frequency
reflectometry it is possible to perform sensitive, large bandwidth, electrical
resistance measurements of 2D systems at mK temperatures. We construct a simple
lumped element model where the gated 2DHS is described as a resistive
transmission line. The model gives a qualitative understanding of the
experimental results. As an example, we use our method to map out the Landau
level evolution in a 2DHS as a function of magnetic field and gate voltage.

30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
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The categories of this paper are: eess
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph