Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-transfer and Topological Hall Effects as Novel Probes for Magnetic
  Disclinations in Frustrated Magnets   Magnetic frustrated systems have resurged in spintronics as optimal
candidates for hosting three dimensional topological solitons, such as Shankar
skyrmions and 4$\pi$-vortices, and other singular topological defects. These
topological excitations are encoded in the order-parameter connected to the
spin-spin correlation of the system. The key challenge for their experimental
discovery is the lack of probes to observe them. We demonstrate here that
spin-transfer torque and topological Hall effect measurements can serve as
probes of magnetic disclinations and solitons in these systems, by means of a
previously unidentified contribution to them from these topological defects,
with no analog in collinear magnetism. We present a minimal low-energy
long-wavelength theory for the itinerant carriers and derive the effective
emergent electrodynamics arising from the noncoplanar magnetic background with
topological defects and solitons. This opens new avenues for the detection of
topological defects in magnetic systems with order-parameter manifolds beyond
the conventional $S^{2}$ (unit sphere) ferromagnetic paradigm.

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The categories of this paper are: gr-qc
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The categories of this paper are: math
30
The categories of this paper are: q-alg
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The categories of this paper are: econ
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The categories of this paper are: eess
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The categories of this paper are: nucl-ex
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: stat
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The categories of this paper are: physics
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th