Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-torque resonance due to diffusive dynamics at a surface of
  topological insulator   We investigate spin-orbit torques on magnetization in an insulating
ferromagnetic (FM) layer that is brought into a close proximity to a
topological insulator (TI). In addition to the well-known field-like spin-orbit
torque, we identify an anisotropic anti-damping-like spin-orbit torque that
originates in a diffusive motion of conduction electrons. This diffusive torque
is vanishing in the limit of zero momentum (i. e. for spatially homogeneous
electric field or current), but may, nevertheless, have a strong effect on
spin-torque resonance at finite frequency provided external field is neither
parallel nor perpendicular to the TI surface. The required electric field
configuration can be created by a grated top gate.

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The categories of this paper are: alg-geom
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
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The categories of this paper are: solv-int
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The categories of this paper are: math
1
The categories of this paper are: cs
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The categories of this paper are: q-fin
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The categories of this paper are: nlin
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The categories of this paper are: q-alg