Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Virtual Scanning Tunneling Microscopy: A Local Spectroscopic Probe of 2D
  Electron Systems   We propose a novel probe technique capable of performing local
low-temperature spectroscopy on a 2D electron system (2DES) in a semiconductor
heterostructure. Motivated by predicted spatially-structured electron phases,
the probe uses a charged metal tip to induce electrons to tunnel locally,
directly below the tip, from a "probe" 2DES to a "subject" 2DES of interest. We
test this concept with large-area (non-scanning) tunneling measurements, and
predict a high spatial resolution and spectroscopic capability, with minimal
influence on the physics in the subject 2DES.

20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: q-fin
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol