Spin dynamics in Ho2Ru2O7

J. S. Gardner, A. L. Cornelius, L. J. Chang, M. Prager, Th Brückel, G. Ehlers

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The spin relaxation processes within the pyrochlore Ho2Ru 2O7 have been investigated by neutron scattering and bulk property techniques. A single-ion process, that is thermally activated, dominates the spin-spin relaxation spectrum above 2 K. Assuming Arrhenius behaviour, we found an activation energy Δ ≤ (329 ± 6) K and characteristic relaxation time τ0 ≤ (5.2 ± 0.3) × 10-12s in the paramagnetic state, akin to those found in the spin ice, Ho2Ti2O7. Atlow temperature (T<95K) the activation energy lowers and below 20K the entropy and ac susceptibility are similar to that observed in other spin ice compounds within a 10kOe field.

Original languageEnglish
Pages (from-to)7089-7095
Number of pages7
JournalJournal of Physics Condensed Matter
Volume17
Issue number44
DOIs
Publication statusPublished - 2005 Nov 9

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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    Gardner, J. S., Cornelius, A. L., Chang, L. J., Prager, M., Brückel, T., & Ehlers, G. (2005). Spin dynamics in Ho2Ru2O7. Journal of Physics Condensed Matter, 17(44), 7089-7095. https://doi.org/10.1088/0953-8984/17/44/002