Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Implications of Tc variation in UBe13 for a possible
  Fulde-Ferrell-Larkin-Ovchinnikov phase   We measure the heat capacity of UBe13 with an unusually low Tc for a
polycrystal. We find an upturn in the upper critical field Hc2(T) below about
Tc/2, much as for higher-Tc samples. Comparing the critical fields in our
sample and in samples with higher Tc's shows that the low-temperature limit of
Hc2 is proportional to Tc(H=0), as expected if the upturn comes from an FFLO
phase and strong coupling.

33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio