Quantum critical behavior in the highly random system Tl1-x Kx CuCl3 probed by zero- and longitudinal-field muon spin relaxation measurements

Takao Suzuki; Fumiko Yamada; Takayuki Kawamata; Isao Watanabe; Takayuki Goto; Hidekazu Tanaka

doi:10.1103/PhysRevB.79.104409

Quantum critical behavior in the highly random system Tl1-x Kx CuCl3 probed by zero- and longitudinal-field muon spin relaxation measurements

Takao Suzuki, Fumiko Yamada, Takayuki Kawamata, Isao Watanabe, Takayuki Goto, Hidekazu Tanaka

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

13 Citations (Scopus)

Abstract

Zero- and longitudinal-field muon-spin-relaxation (LF-μSR) measurements were carried out on the randomness-introduced quantum spin system Tl1-x Kx CuCl3. The relative temperature change in the muon-spin-relaxation rate λ in longitudinal-fields, which corresponds to the wave-vector integration of the generalized dynamical susceptibility, was deduced from LF-μSR measurements. Peak structure in the relative temperature change of λ for x=0.60 is observed at T∼3 K in 3950 G, and the temperature where the peak is observed decreases with decreasing the magnetic field. This behavior is interpreted as the soft mode of spin waves in the vicinity of the quantum critical point.

Original language	English
Article number	104409
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	79
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.79.104409
Publication status	Published - 2009 Mar 3
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.79.104409

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Quantum critical behavior in the highly random system Tl1-x Kx CuCl3 probed by zero- and longitudinal-field muon spin relaxation measurements. / Suzuki, Takao; Yamada, Fumiko; Kawamata, Takayuki et al.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 79, No. 10, 104409, 03.03.2009.

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

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Quantum critical behavior in the highly random system Tl1-x Kx CuCl3 probed by zero- and longitudinal-field muon spin relaxation measurements

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