Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Novel Magnetic Phases Revealed by Ultra-High Magnetic Field in the
  Frustrated Magnet ZnCr2O4   The Faraday rotation technique is used to map out the finite-temperature
phase diagram of the prototypical frustrated magnet ZnCr2O4, in magnetic fields
of up to 190 T generated by the single-turn coil method. We find evidence for a
number of magnetic phase transitions, which are well-described by the theory
based on spin-lattice coupling. In addition to the 1/2 plateau and a 3:1 canted
phase, a 2:1:1 canted phase is found for the first time in chromium spinel
oxides, which has been predicted by a theory of Penc et al. to realize in a
small spin-lattice coupling limit. Both the new 2:1:1 and the 3:1 phase are
regarded as the supersolid phases according to a magnetic analogy of Matsuda
and Tsuneto, and Liu and Fisher.

25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex