Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Control of Majorana Edge Modes by a g-factor Engineered Nanowire Spin
  Transistor   We propose the manipulation of Majorana edge states via hybridization and
spin currents in a nanowire spin transistor. The spin transistor is based on a
heterostructure nanowire comprising of semiconductors with large and small
g-factors that form the topological and non-topological regions respectively.
The hybridization of bound edge states results in spin currents and
$4\pi$-periodic torques, as a function of the relative magnetic field angle --
an effect which is dual to the fractional Josephson effect. We establish
relation between torques and spin-currents in the non-topological region where
the magnetic field is almost zero and spin is conserved along the spin-orbit
field direction. The angular momentum transfer could be detected by sensitive
magnetic resonance force microscopy techniques.

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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat
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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: math-ph