Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Impurity and band effects competition on the appearence of Inverse Giant
  Magnetoresistence in Cu/Fe multilayers with Cr   We have studied the dependence of impurity vs. band effects in the appearance
of inverse giant magnetoresistance (IGMR) in Cu/Fe superlattices whit Cr.
Current in plane (CIP) and current perpendicular to the plane (CPP) geometries
are considered. For the calculation of the conductivities we have used the
linearized Boltzmann equation in the relaxation time approximation. Cr impurity
effects are taken into account through the spin dependent relaxation times and
the band effects through the semiclassical velocities obtained from the LDA
calculated electronic structure.
  The larger the Cr/Fe hybridization strength, the bigger is the tendency
towards
  IGMR. In particular, in CIP geometry roughness at these interfaces increases
the IGMR range.
  The results are compared with experiments and we conclude that the
experimental GMR curves can only be explained if Cr bands are present.

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The categories of this paper are: cs
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The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ