Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Role of Spin Diffusion in Current-Induced Domain Wall Motion   Current-induced spin torque and magnetization dynamics in the presence of
spin diffusion in magnetic textures is studied theoretically. We uncover an
additional torque on the form \sim{\bm\nabla}^2[{\bf M}x({\bf u}\cdot{\bm
\nabla}){\bf M}], where {\bf M} is the local magnetization and {\bf u} is the
direction of injected current. This torque is inversely proportional to the
square of the domain wall width (\approx\frac{1}{W^2}) and strongly depends on
the domain wall structure. Whereas its influence remains moderate for
transverse domain walls, it can significantly increase the transverse velocity
of vortex cores. Consequently, the spin diffusion can dramatically enhance the
non-adiabaticity of vortex walls.

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The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat