µSR Studies on Spin-Peierls System Cu1−xZnxGeO3 (x=0, 0.01, 0.03, and 0.07)

Akio Sohma, Haruo Okajima, Tetsuya Yokoo, Atsushi Yamashita, Jun Akimitsu, Kusuo Nishiyama, Kanetada Nagamine

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5 Citations (Scopus)

Abstract

The zero-field and the longitudinal field spin-relaxations of positive muon (μ+) were measured in Cu1−xZnxGeO3 (x=0, 0.01, 0.03, and 0.07) to study the spin-Peierls system. The obtained relaxation functions were separated into two components below TSP in CuGeO3. We conclude that the fast relaxation is originated from a few Cu2+ spins being not coupled with spin-singlet state, and that the slow relaxation is due to the nuclear dipolar fields. The fast relaxation function shape changes to the Gaussian at 5 k in the sample of x=0.07. The system changes from the static diluted to the densed one. We also confirmed the appearances of the spin-glass-like relaxations at 5 K in the samples of x=0.03 and 0.07.

Original languageEnglish
Pages (from-to)3060-3065
Number of pages6
Journaljournal of the physical society of japan
Volume64
Issue number8
DOIs
Publication statusPublished - Aug 1995
Externally publishedYes

Keywords

  • CuGeO
  • spin glass transition
  • spin-Peierls transition
  • μSR

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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