Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Large enhancement of thermoelectric effects in a double quantum dot
  system due to interference and Coulomb correlation phenomena   Thermoelectric effects in a double quantum dot system coupled to external
magnetic/nonmagnetic leads are investigated theoretically. The basic
thermoelectric transport characteristics, like thermopower, electronic
contribution to heat conductance, and the corresponding figure of merit, have
been calculated in terms of the linear response theory and Green function
formalism in the Hartree-Fock approximation for Coulomb interactions. An
enhancement of the thermal efficiency (figure of merit ZT) due to Coulomb
blockade has been found. The magnitude of ZT is further considerably enhanced
by quantum interference effects. Both the Coulomb correlations and interference
effects lead to strong violation of the Wiedemann-Franz law. The influence of
spin-dependent transport and spin bias on the thermoelectric effects
(especially on Seebeck and spin Seebeck effects) is also analyzed.

13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol