Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the nature and anisotropy of $Q \neq 0$ correlations in Tb_2Ti_2O_7
  under the application of magnetic fields   We report an analysis of neutron diffraction from single crystals of the
spin-liquid pyrochlore Tb2Ti2O7 under the application of magnetic fields along
the crystallographic $[110]$ direction. Such a perturbation has been shown to
destroy the spin liquid ground state and induce long-range order, although the
nature of the ordered state was not immediately determined. Recently, it has
been proposed that the ordered state is characterized by spin-ice-like
correlations, evincing an emergent ferromagnetic tendency in this material
despite the large negative Curie-Weiss constant. Here, we argue instead that
the ordered state is dominated by $Q \neq 0$ correlations that emerge either
from strong antiferromagnetism or magnetoelastic distortion of the crystal. In
contrast to previous reports, we observe no evidence for re-entrant behaviour
in the high field limit. Extreme sensitivity of the ordered state to the
alignment of the applied field is suggested to account for these discrepancies.

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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
1
The categories of this paper are: cs
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The categories of this paper are: hep-th
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The categories of this paper are: math
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The categories of this paper are: ao-sci
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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-bio
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The categories of this paper are: eess
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The categories of this paper are: hep-lat