Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Presaturation phase with no dipolar order in a quantum
  ferro-antiferromagnet   Magnetization, magnetocaloric, calorimetric, neutron and X-ray diffraction
and inelastic neutron scattering measurements are performed on single crystals
of BaCdVO(PO$_4$)$_2$. The low-temperature crystal structure is found to be of
a lower symmetry than previously assumed. The result is a more complicated
model spin Hamiltonian, which we infer from measurements of the spin wave
dispersion spectrum. The main finding is a novel spin state which emerges in
high magnetic fields after antiferromagnetic order is terminated at
$H_{c1}\simeq 4.0$ T. It is a distinct thermodynamic phase with a well-defined
phase boundary at $H_{c2}\simeq 6.5$ T and is clearly separate from the fully
saturated phase. Yet, it shows no conventional (dipolar) magnetic long range
order. We argue that it is fully consistent with the expectations for a quantum
bond-nematic state.

18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin