Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Temperature and voltage dependence of magnetic barrier junctions with a
  nonmagnetic spacer   The temperature and voltage dependence of spin transport is theoretically
investigated in a new type of magnetic tunnel junction, which consists of two
ferromagnetic outer electrodes separated by a ferromagnetic barrier and a
nonmagnetic (NM) metallic spacer. The effect of spin fluctuation in magnetic
barrier, which plays an important role at finite temperature, is included by
taking the mean-field approximation. It is found that, the tunnel
magnetoresistance (TMR) and the electron-spin polarization depend strongly on
the temperature and the applied voltage. The TMR and spin polarization at
different temperatures show an oscillatory behavior as a function of the NM
spacer thickness. Also, the amplitude of these oscillations is regularly
reduced when the temperature increases. The maximum TMR value, varies
approximately from 270% in reverse bias (at $T$=0 K) to 25% in forward bias (at
$T\geq T_C$).

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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
2
The categories of this paper are: math
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The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
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The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org