Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-dependent thermoelectric phenomena in a quantum dot attached to
  ferromagnetic and superconducting electrodes   We investigate transport and thermoelectric properties of hybrid systems
based on a single-level quantum dot and one superconducting lead. The other
lead is generally normal-metallic ferromagnet. In the latter case
single-particle transport is spin-polarized. Our main interest is in the
interplay of Andreev tunneling of Cooper pairs and single-particle tunneling.
The latter is responsible for relatively large thermopower and figure of merit
due to a diverging density of single-particle states at the superconducting gap
edges. System with ferromagnetic and superconducting leads can also reveal spin
thermoelectric phenomena. Finite superconducting gap is considered within the
BCS theory, and the thermoelectric coefficients are calculated by means of
nonequilibrium Green's function technique within Hartree-Fock like
approximation with respect to the intradot Coulomb interaction.

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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: q-bio
9
The categories of this paper are: nlin
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The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
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The categories of this paper are: funct-an