Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin Density Waves and Domain Wall Interactions in Nanowires   We investigated how the dynamics of a domain wall are affected by the
presence of spin density waves in a ferromagnetic wire. Domain walls and other
scattering centres can cause coherent spin density waves to propagate through a
wire when a current is applied. In some cases the spin torque due to these
scattered electrons can be enhanced such that it is on a par with the exchange
and anisotropy energies controlling the shape and dynamics of the domain wall.
In such a case we find that the spin density waves enhance the current induced
domain wall motion, allowing for domain wall motion with smaller current
pulses. Here we consider a system involving two domain walls and focus on how
the motion of the second domain wall is modified by the spin density waves
caused by the presence of the first domain wall.

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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ph
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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: cs
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The categories of this paper are: q-alg
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The categories of this paper are: ao-sci
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The categories of this paper are: stat
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc