Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tunneling Characteristics of an Electron-Hole Trilayer under an In-plane
  Magnetic Field   We have studied the tunneling properties of GaSb/AlSb/InAs/AlSb/GaSb
heterostructures, in which electrons and holes accumulate in the InAs and GaSb
regions respectively, under a magnetic field parallel to the interfaces. The
low-temperature (T = 4.2K), zero-bias magnetoconductance has shown a behavior
with field that evidences the two-dimensional character of both electrons and
holes and that has allowed us to determine the hole density and the
electron-hole separation. The observed field dependence of the current-voltage
characteristics is explained by the relative change in parallel momentum of
electrons and holes induced by the field.

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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: eess
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The categories of this paper are: alg-geom
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The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
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The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas