Magnetic correlations in the spin ice Ho2-xYxTi 2O7 as revealed by neutron polarization analysis

L. J. Chang, Y. Su, Y. J. Kao, Y. Z. Chou, R. Mittal, H. Schneider, Th Brückel, G. Balakrishnan, M. R. Lees

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19 Citations (Scopus)

Abstract

We present single-crystal magnetic diffuse neutron-scattering measurements with polarization analysis on the spin ice Ho2-x Yx Ti2 O7 (x=0, 0.3, and 1). At 2 K, the spin-flip scattering patterns are typical of a nearest-neighbor spin ice and the effects of Y doping are seen in the widths of the pinch points. At low temperature, the spin-flip patterns are characteristic of a dipolar spin ice and are unaffected by Y doping. In the nonspin-flip channel, we observe the signature of strong antiferromagnetic correlations at the same temperature as the dipolar spin-ice correlations appear in the spin-flip channel. These experimental observations have been well reproduced by our Monte Carlo simulations.

Original languageEnglish
Article number172403
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume82
Issue number17
DOIs
Publication statusPublished - 2010 Nov 5

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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