μSR studies on spin-Peierls system Cu1-xZn xGeO3 (x=0, 0.01, 0.03, and 0.07)

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

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The zero-field and the longitudinal field spin-relaxations of positive muon (μ+) were measured in Cu1-xZnxGeO 3 (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 T SP 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
Publication statusPublished - Aug 1995
Externally publishedYes

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shape functions
spin glass
muons

Keywords

  • μSR
  • CuGeO
  • Spin glass transition
  • Spin-Peierls transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Sohma, A., Okajima, H., Yokoo, T., Yamashita, A., Akimitsu, J., Nishiyama, K., & Nagamine, K. (1995). μSR studies on spin-Peierls system Cu1-xZn xGeO3 (x=0, 0.01, 0.03, and 0.07). Journal of the Physical Society of Japan, 64(8), 3060-3065.

μSR studies on spin-Peierls system Cu1-xZn xGeO3 (x=0, 0.01, 0.03, and 0.07). / Sohma, Akio; Okajima, Haruo; Yokoo, Tetsuya; Yamashita, Atsushi; Akimitsu, Jun; Nishiyama, Kusuo; Nagamine, Kanetada.

In: Journal of the Physical Society of Japan, Vol. 64, No. 8, 08.1995, p. 3060-3065.

Research output: Contribution to journalArticle

Sohma, A, Okajima, H, Yokoo, T, Yamashita, A, Akimitsu, J, Nishiyama, K & Nagamine, K 1995, 'μSR studies on spin-Peierls system Cu1-xZn xGeO3 (x=0, 0.01, 0.03, and 0.07)', Journal of the Physical Society of Japan, vol. 64, no. 8, pp. 3060-3065.
Sohma A, Okajima H, Yokoo T, Yamashita A, Akimitsu J, Nishiyama K et al. μSR studies on spin-Peierls system Cu1-xZn xGeO3 (x=0, 0.01, 0.03, and 0.07). Journal of the Physical Society of Japan. 1995 Aug;64(8):3060-3065.
Sohma, Akio ; Okajima, Haruo ; Yokoo, Tetsuya ; Yamashita, Atsushi ; Akimitsu, Jun ; Nishiyama, Kusuo ; Nagamine, Kanetada. / μSR studies on spin-Peierls system Cu1-xZn xGeO3 (x=0, 0.01, 0.03, and 0.07). In: Journal of the Physical Society of Japan. 1995 ; Vol. 64, No. 8. pp. 3060-3065.
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AU - Yokoo, Tetsuya

AU - Yamashita, Atsushi

AU - Akimitsu, Jun

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N2 - The zero-field and the longitudinal field spin-relaxations of positive muon (μ+) were measured in Cu1-xZnxGeO 3 (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 T SP 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.

AB - The zero-field and the longitudinal field spin-relaxations of positive muon (μ+) were measured in Cu1-xZnxGeO 3 (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 T SP 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.

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