Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Control of Edge Currents at a Ferromagnet - Triplet Superconductor
  Interface by Multiple Helical Majorana Modes   We study the spin and charge currents flowing at the interface of an
itinerant ferromagnet with a topological spin-triplet superconductor having
different number of time-reversal-invariant Majorana helical modes. Depending
on the number of helical modes, the capacity of carrying spin and charge
currents is shown to be directly related to the amplitude and orientation of
the ferromagnetic magnetization with respect to the superconducting
$\vec{d}$-vector. Differently from the one-helical mode spin-triplet
superconductor, we find that the presence of a finite amount of electronic
hybridization with the two pairs of Majorana helical modes leads to
nonvanishing charge current independently of the ferromagnetic exchange. The
competition between the two pairs of Majorana helical modes remarkably yields a
spin-current response that is almost constant in the range of weak to
intermediate ferromagnetism. The behavior of the spin current is tightly linked
to the direction of the spin-polarization in the ferromagnet and tends to be
flatten for a magnetization that is coplanar to the spin-triplet
$\vec{d}$-vector independently of the number of helical modes.

9
The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: astro-ph
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The categories of this paper are: q-alg
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The categories of this paper are: physics
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The categories of this paper are: atom-ph