Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-momentum locking induced non-local voltage in topological insulator
  nanowire   The momentum and spin of charge carriers in the topological insulators are
constrained to be perpendicular to each other due to the strong spin-orbit
coupling. We have investigated this unique spin-momentum locking property in
Sb2Te3 topological insulator nanowires by injecting spin-polarized electrons
through magnetic tunnel junction electrodes. Non-local voltage measurements
exhibit a symmetry with respect to the magnetic field applied perpendicular to
the nanowire channel, which is remarkably different from that of a non-local
measurement in a channel that lacks spin-momentum locking. In stark contrast to
conventional non-local spin valves, simultaneous reversal of magnetic moments
of all magnetic contacts to the Sb2Te3 nanowire alters the non-local voltage.
This unusual symmetry is a clear signature of the spin-momentum locking in the
Sb2Te3 nanowire surface states.

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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-th
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The categories of this paper are: physics
2
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: hep-ex
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga
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The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-ex
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The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
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The categories of this paper are: adap-org
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The categories of this paper are: chem-ph