Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generation of dc spin current in a narrow channel with Rashba and
  Dresselhaus spin-orbit interaction   We consider a finite range ac-biased front gate acting upon a quantum channel
with Rashba and Dresselhaus spin-orbit interaction effects. The ac-biased gate,
giving rise to a dynamical Rashba coupling, causes spin-resolved coherent
resonant inelastic scattering. A pure dc spin current is subsequently generated
without accompanying charge current. In the presence of Dresselhaus effect, the
dc spin current is suppressed in the low kinetic energy regime but is assisted
in the high kinetic energy regime.

21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
1
The categories of this paper are: cs