Spin Fluctuations in the Ground State of Doped Quantum Spin System TlCu1-xMg xCl3 with $x=0.0047$ Probed by Muon-Spin-Relaxation Technique
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概要
- 論文の詳細を見る
Zero- and longitudinal-field muon-spin-relaxation (ZF- and LF-$\mu$SR) measurements were carried out down to $T=20$ mK on the slightly doped quantum spin system TlCu1-xMgxCl3 with $x=0.0047$, in which a magnetic phase transition is observed at 0.70 K by specific heat measurement. LF-$\mu$SR measurements above and below the phase transition temperature revealed that the impurity-induced magnetic moments of the Cu-$3d$ spins slowly fluctuate at a frequency of 0.74 MHz at $T=20$ mK, far below the magnetic phase transition temperature. It is possible that the impurity-induced magnetic moments are in an exotic state where they fluctuate while preserving their wave vector and relative phase, i.e., a coherently fluctuating state.
- Physical Society of Japanの論文
- 2009-07-15
著者
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Yamada Fumiko
Department Of Physics Tokyo Institute Of Technology
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OOSAWA Akira
Faculty of Science and Technology, Sophia University
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Goto Takayuki
Faculty Of Science And Technology Sophia University
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Suzuki Takao
Advanced Meson Science Laboratory Nishina Center Riken
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Matsuzaki Teiichiro
Advanced Meson Science Laboratory Nishina Center Riken
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Watanabe Isao
Advanced Meson Science Laboratory Nishina Center Riken
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Tanaka Hidekazu
Department Of Chemistry And Chemical Biology Gunma University
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Goto Takayuki
Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554
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Oosawa Akira
Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554
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