Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Large magnetothermal conductivity in GdBaCo_{2}O_{5+x} single crystals   To study the effects of paramagnetic spins on phonons, both the in-plane and
the c-axis heat transport of GdBaCo_{2}O_{5+x} (GBCO) single crystals are
measured at low temperature down to 0.36 K and in magnetic field up to 16 T. It
is found that the phonon heat transport is very strongly affected by the
magnetic field and nearly 5 times increase of the thermal conductivity in
several Tesla field is observed at 0.36 K. It appears that phonons are
resonantly scattered by paramagnetic spins in zero field and the application of
magnetic field removes such strong scattering, but the detailed mechanism is to
be elucidated.

1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math