Magnetic correlations in pyrochlore spin ice as probed by polarized neutron scattering

Polarized neutron diffuse scattering experiments have been carried out on (1–10) and (111) oriented single crystals of the pyrochlore spin ice [1] compound Ho2Ti2O7 in order to investigate the complex spin correlations in this material at low temperature. The incident neutron beam was polarized perp...

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Bibliographic Details
Published in:Journal of physics. Conference series 2010-02, Vol.211 (1), p.012013, Article 012013
Main Authors: Chang, L J, Su, Y, Schneider, H, Mittal, R, Lees, M R, Balakrishnan, G, Brückel, T
Format: Article
Language:English
Subjects:
Anisotropy
Correlation
Crystal structure
Low temperature
Neutron beams
Neutron scattering
Neutrons
Physics
Pyrochlores
Single crystals
Spin ice
Temperature dependence
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Summary:Polarized neutron diffuse scattering experiments have been carried out on (1–10) and (111) oriented single crystals of the pyrochlore spin ice [1] compound Ho2Ti2O7 in order to investigate the complex spin correlations in this material at low temperature. The incident neutron beam was polarized perpendicular to the horizontal scattering plane. Thus, the corresponding components of the spin correlations in and out of the scattering plane can be probed with spin-flip (SF) and non-spin-flip (NSF) scattering respectively via neutron polarization analysis. A strong anisotropy of the in-plane and out-of-plane spin scattering has been observed in both samples. The temperature dependence of magnetic diffuse scattering has also been measured. Here we concentrate on reporting the experimental results. In addition, a brief discussion of the possible nature of spin correlations in this pyrochlore spin ice will also be given.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/211/1/012013