Bond-randomness effect on the quantum spin system Tl1 - x Kx CuCl3 probed by muon-spin-relaxation method

Takao Suzuki; Fumiko Yamada; Isao Watanabe; Takayuki Goto; Akira Oosawa; Hidekazu Tanaka

doi:10.1016/j.physb.2008.11.108

Bond-randomness effect on the quantum spin system Tl_{1 - x} K_x CuCl₃ probed by muon-spin-relaxation method

Takao Suzuki, Fumiko Yamada, Isao Watanabe, Takayuki Goto, Akira Oosawa, Hidekazu Tanaka

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Muon-spin-relaxation (μ SR) measurements were carried out on the randomness-introduced quantum spin system Tl_{1 - x} K_x CuCl₃. Zero-field μ SR measurement results reveal that the rapid increase of the μ SR rate λ with decreasing temperature in the case of x = 0.58. From the result of longitudinal-field μ SR measurements, a finite relaxation remains at 4000 G, which means that Cu - 3 d spins fluctuate down to 20 mK although the slowing down of the frequency of the spin fluctuation occurs. These results suggest that there is a quite possibility of the existence of an ordered or spin frozen phase in a neighboring concentration of x around 0.58.

Original language	English
Pages (from-to)	590-593
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	404
Issue number	5-7
DOIs	https://doi.org/10.1016/j.physb.2008.11.108
Publication status	Published - 2009 Apr 15
Externally published	Yes

Keywords

Quantum spin system
Randomness
Tl K CuCl
μ SR

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2008.11.108

Cite this

@article{4858234a24b946eeb0015c9a72e5ace8,

title = "Bond-randomness effect on the quantum spin system Tl1 - x Kx CuCl3 probed by muon-spin-relaxation method",

abstract = "Muon-spin-relaxation (μ SR) measurements were carried out on the randomness-introduced quantum spin system Tl1 - x Kx CuCl3. Zero-field μ SR measurement results reveal that the rapid increase of the μ SR rate λ with decreasing temperature in the case of x = 0.58. From the result of longitudinal-field μ SR measurements, a finite relaxation remains at 4000 G, which means that Cu - 3 d spins fluctuate down to 20 mK although the slowing down of the frequency of the spin fluctuation occurs. These results suggest that there is a quite possibility of the existence of an ordered or spin frozen phase in a neighboring concentration of x around 0.58.",

keywords = "Quantum spin system, Randomness, Tl K CuCl, μ SR",

author = "Takao Suzuki and Fumiko Yamada and Isao Watanabe and Takayuki Goto and Akira Oosawa and Hidekazu Tanaka",

note = "Funding Information: We would like to thank A. Amato, B. Christopher, and all other members of group at PSI for the technical support on the measurement using the dilution refrigerator. This work was partially supported by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Young Scientists (B) 19740187, 2007.",

year = "2009",

month = apr,

day = "15",

doi = "10.1016/j.physb.2008.11.108",

language = "English",

volume = "404",

pages = "590--593",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

number = "5-7",

}

TY - JOUR

T1 - Bond-randomness effect on the quantum spin system Tl1 - x Kx CuCl3 probed by muon-spin-relaxation method

AU - Suzuki, Takao

AU - Yamada, Fumiko

AU - Watanabe, Isao

AU - Goto, Takayuki

AU - Oosawa, Akira

AU - Tanaka, Hidekazu

N1 - Funding Information: We would like to thank A. Amato, B. Christopher, and all other members of group at PSI for the technical support on the measurement using the dilution refrigerator. This work was partially supported by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Young Scientists (B) 19740187, 2007.

PY - 2009/4/15

Y1 - 2009/4/15

N2 - Muon-spin-relaxation (μ SR) measurements were carried out on the randomness-introduced quantum spin system Tl1 - x Kx CuCl3. Zero-field μ SR measurement results reveal that the rapid increase of the μ SR rate λ with decreasing temperature in the case of x = 0.58. From the result of longitudinal-field μ SR measurements, a finite relaxation remains at 4000 G, which means that Cu - 3 d spins fluctuate down to 20 mK although the slowing down of the frequency of the spin fluctuation occurs. These results suggest that there is a quite possibility of the existence of an ordered or spin frozen phase in a neighboring concentration of x around 0.58.

AB - Muon-spin-relaxation (μ SR) measurements were carried out on the randomness-introduced quantum spin system Tl1 - x Kx CuCl3. Zero-field μ SR measurement results reveal that the rapid increase of the μ SR rate λ with decreasing temperature in the case of x = 0.58. From the result of longitudinal-field μ SR measurements, a finite relaxation remains at 4000 G, which means that Cu - 3 d spins fluctuate down to 20 mK although the slowing down of the frequency of the spin fluctuation occurs. These results suggest that there is a quite possibility of the existence of an ordered or spin frozen phase in a neighboring concentration of x around 0.58.

KW - Quantum spin system

KW - Randomness

KW - Tl K CuCl

KW - μ SR

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