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

doi:10.1143/JPSJ.64.3060

µSR Studies on Spin-Peierls System Cu_1−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 journal › Article › peer-review

5 Citations (Scopus)

Abstract

The zero-field and the longitudinal field spin-relaxations of positive muon (μ⁺) were measured in Cu_1−xZn_xGeO₃ (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 language	English
Pages (from-to)	3060-3065
Number of pages	6
Journal	journal of the physical society of japan
Volume	64
Issue number	8
DOIs	https://doi.org/10.1143/JPSJ.64.3060
Publication status	Published - Aug 1995
Externally published	Yes

Keywords

CuGeO
spin glass transition
spin-Peierls transition
μSR

ASJC Scopus subject areas

Physics and Astronomy(all)

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

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.",

keywords = "CuGeO, spin glass transition, spin-Peierls transition, μSR",

author = "Akio Sohma and Haruo Okajima and Tetsuya Yokoo and Atsushi Yamashita and Jun Akimitsu and Kusuo Nishiyama and Kanetada Nagamine",

year = "1995",

month = aug,

doi = "10.1143/JPSJ.64.3060",

language = "English",

volume = "64",

pages = "3060--3065",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

number = "8",

}

TY - JOUR

T1 - µSR Studies on Spin-Peierls System Cu1−xZnxGeO3 (x=0, 0.01, 0.03, and 0.07)

AU - Sohma, Akio

AU - Okajima, Haruo

AU - Yokoo, Tetsuya

AU - Yamashita, Atsushi

AU - Akimitsu, Jun

AU - Nishiyama, Kusuo

AU - Nagamine, Kanetada

PY - 1995/8

Y1 - 1995/8

N2 - 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.

AB - 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.

KW - CuGeO

KW - spin glass transition

KW - spin-Peierls transition

KW - μSR

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