Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: What is the Physical Explanation for the Very Large Ballistic
  Magnetoresitance Observed in Electrodeposited Nanocontacts?   Recent experiments in approximately 10nm size electrodeposited Ni-Ni
nanocontacts have shown ballistic magnetoresitance values of 700% stable during
a week (Garcia et al Appl. Phys. Lett. 79, 4550(2001) and very recently up to
3000% (Chopra and Hua, Phys. Rev. B 66,020403-1 (2002)). These values can
provide very interesting magnetoelectronic devices integrated in the
terabyte/square inch. Scattering in thin domain wall of the Ni-Ni nanocontacts,
or quantized effects phenomena do not explain these values. An explanation is
presented that requires the existence of a very thin, less than 1nm, dead
magnetic layer grown during the electrodeposition process that is transparent
to the electrons and has two roles: one, is to conserve spin in the electron
conduction and the other, is to change and increase the polarization at Fermi
level in the Ni.

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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: math-ph
17
The categories of this paper are: q-fin
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The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: nlin
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: ao-sci