Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2004-04-26
Phys. Rev. B 70, 134408 (2004)
Physics
Condensed Matter
Disordered Systems and Neural Networks
8 pages, 4 figures as 12 png files, updated to final version, please download "source" to obtain figures
Scientific paper
10.1103/PhysRevB.70.134408
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.
Balakrishnan Ganesh
Bramwell Steven. T.
Enjalran Matthew
Fåk B.
Fennell Tom
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