Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High figure-of-merit in the heavy-fermion UN2 system for radioisotope
  thermoelectric applications   The design of uranium-based thermoelectric materials presents a novel and
intriguing strategy for directly converting nuclear heat into electrical power.
Using high-level first-principles approach combined with accurate solution of
Boltzmann transport equation, we demonstrate that a giant n-type power factor
of 13.8 mW/mK^2 and a peak ZT value of 2.2 can be realized in the heavy-fermion
UN2 compound at 700 K. Such promising thermoelectric performance arises from
the large degeneracy (Nv=14) of heavy conduction band coupled with weak
electron-phonon interactions, which is in principle governed by the strong
Coulomb correlation among the partially filled U-5f electrons in the
face-centered cubic structure. Collectively, our theoretical work suggests that
the energetic UN2 is an excellent alternative to efficient radioisotope power
conversion, which also uncovers an underexplored area for thermoelectric
research.

12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an