Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic field induced Coulomb blockade in small disordered delta-doped
  heterostructures   At low densities, electrons confined to two dimensions in a delta-doped
heterostructure can arrange themselves into self-consistent droplets due to
disorder and screening effects. We use this observation to show that at low
temperatures, there should be resistance oscillations in low density two
dimensional electron gases as a function of the gate voltage, that are greatly
enhanced in a magnetic field. These oscillations are intrinsic to small samples
and give way to variable range hopping resistivity at low temperatures in
larger samples. We place our analysis in the context of recent experiments
where similar physical effects have been discussed from the point of view of a
Wigner crystal or charge density wave picture.

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The categories of this paper are: physics
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: econ
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The categories of this paper are: ao-sci
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The categories of this paper are: supr-con
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The categories of this paper are: cs
28
The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: astro-ph
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: q-alg