Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transverse ordering of an antiferromagnet in a field with oblique angle
  to the easy axis   Motivated by the recent experimental observations [Phys Rev B 57 R11051
(1998)] of transverse spin ordering in FeBr_2 induced by a magnetic field with
oblique angle to the easy axis of the system, we performed extensive Monte
Carlo simulations of a classical anisotropic Heisenberg model. We have
calculated the specific heat and the parallel and perpendicular components of
the magnetisation as well as the antiferromagnetic order parameter and studied
these quantities as a function of temperature. A tilted spin-flop phase is
obtained for certain parameter values. Many of the effects occuring in
connection with this phase agree qualitatively well with the experimental
facts.

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The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
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The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
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The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin