Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nernst effect in single crystals of the pnictide superconductor
  CaFe1.92Co0.08As2 and parent compound CaFe2As2   We report a combined study of the Nernst coefficient (v), Hall effect and
thermoelectric power of CaFe2As2 and CaFe1.92Co0.08As2 single crystals. The
absolute value of v in both samples is enhanced, probably due to ambipolar flow
of electron- and hole-like quasiparticles. The onset of spin-density-wave order
in CaFe2As2 causes further rapid rise of the Nernst coefficient. On the
contrary, in the CaFe1.92Co0.08As2 crystal we do not see any feature of v(T),
which could be clearly associated with SDW fluctuations. In this Co-doped
sample there is also no noticeable increase in of v in the vicinity of
superconducting transition, despite the expectation of such due to vortex
movement.

12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics