Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bias dependence of magnetic exchange interactions: application to
  interlayer exchange coupling in spin valves   We study how a bias voltage changes magnetic exchange interactions. We derive
a general expression for magnetic exchange interactions for systems coupled to
reservoirs under a bias potential, and apply it to spin valves. We find that
for metallic systems, the interlayer exchange coupling shows a weak,
oscillatory dependence on the bias potential. For tunneling systems, we find a
quadratic dependence on the bias potential, and derive an approximate
expression for this bias dependence for a toy model. We give general conditions
for when the interlayer exchange coupling is a quadratic function of bias
potential.

10
The categories of this paper are: q-bio
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The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
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The categories of this paper are: math
30
The categories of this paper are: q-alg