Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutron Scattering Investigation of the Spin Ice State in Dy2Ti2O7   Dy2Ti2O7 has been advanced as an ideal spin ice. We present a neutron
scattering investigation of a sample of 162Dy2Ti2O7. The scattering intensity
has been mapped in zero applied field in the hhl and hk0 planes at temperatures
between 0.05 K and 20 K. The measured diffuse scattering (in the static
approximation) has been compared to that predicted by the dipolar spin ice
model. The comparison is good, except at the Brillouin zone boundaries where
extra scattering appears in the experimental data. It is concluded that the
dipolar spin ice model provides a successful basis for understanding Dy2Ti2O7,
but that there are issues which remain to be clarified.

13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
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The categories of this paper are: q-fin
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con