Coexistence of long-range order and spin fluctuation in geometrically frustrated clinoatacamite Cu2Cl(OH)3

X. G. Zheng, H. Kubozono, K. Nishiyama, W. Higemoto, T. Kawae, A. Koda, C. N. Xu

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

Muon spin rotation experiments are carried out on clinoatacamite, Cu2Cl(OH)3, which is a new geometrically frustrated system featuring a three-dimensional network of corner-sharing tetrahedral 3d Cu2+ spins. A long-range antiferromagnetic order occurs below 18.1 K with a surprisingly small entropy release of about 0.05Rln2/Cu. Below 6.5K, the static long-range order transforms abruptly into a metastable state with nearly complete depolarization of muon spins which suggests strong fluctuation. The system then enters a state in which partial long-range order and spin fluctuation coexist down to the lowest experimentally attainable temperature of 20mK. This work presents a novel system for studying geometric frustration.

Original languageEnglish
Article number057201
JournalPhysical Review Letters
Volume95
Issue number5
DOIs
Publication statusPublished - Jul 29 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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