Change of the Dynamics of Internal Fields in the Normal State of La_<2-x>Sr_xCuO_4 Observed by Muon-Spin-Relaxation(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
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Zero-field and longitudinal-field muon-spin-relaxation measurements have been carried out in order to investigate the electronic and magnetic states in La_<2-x>Sr_xCuO_4 over a wide range of hole concentration from x=0.024 to 0.15. It has been found that the dynamic depolarization rate of muon spins in zero field starts to increase monotonically with decreasing temperature at a high temperature around 100K. This effect is enhanced around the hole concentration of 1/8per Cu but easily suppressed by the application of a small external field of a couple of ten gauss. The present study suggests that the dynamics of fluctuating internal fields at the muon site in the normal state of La_<2-x>Sr_xCuO_4 changes at a high temperature around 100K and is correlated with the mobility of holes. Possible relationships with spin-hole stripes and the spin-gap state in the normal state are discussed.
- 社団法人日本物理学会の論文
- 2008-12-15
著者
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Koike Yoji
Department Applied Physics Graduate School Of Engineering Tohoku University
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Yairi Satoshi
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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Adachi Tadashi
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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WATANABE Isao
Advanced Meson Science Laboratory, RIKEN
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Nagamine Kanetada
Atomic Physics Laboratory Riken (the Institute Of Physical And Chemical Research):muon Science Labor
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Watanabe Isao
Advanced Meson Science Laboratory Nishina Center Riken
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Koike Yoji
Fujitsu Laboratories Ltd.
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Watanabe Isao
Advanced Meson Science Laboratory Riken Nishina Center
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Nagamine Kanetada
Atomic Physics Laboratory Riken (the Institute Of Physical And Chemical Research)
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Watanabe Isao
Advanced Meson Science Laboratory, RIKEN Nishina Center
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