Muon Spin Relaxation Study of Crossover from S=1/2 to S=1 of Composite Haldane Spin Chains in IPA-CuCl_3(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
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Muon spin relaxation (μ^+SR) measurements were performed on a S=1 of composite Haldane spin chains in IPA-CuCl_3, which consists of a spin-ladder network along the a-axis. At a zero external magnetic field, the μ^+ spin relaxation became slightly faster with the development of a magnetic short-range order, but, as expected, oscillating spectra, which indicate a magnetic long-range order, did not appear. From the μ^+SR time spectra under transverse and longitudinal magnetic fields, fluctuation of the local field whose frequency was estimated to be 99±12MHz was observed at 2.0K, but it disappeared at 12 and 50K. The appearance of the local field at a temperature between 12 and 2.0K may suggest experimental evidence of the crossover from S=1/2 spin state to S=1 of composite Haldane spin state with decreasing temperature.
- 社団法人日本物理学会の論文
- 2007-01-15
著者
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HIGEMOTO Wataru
Meson Science Laboratory, Institute of Materials Structure Science, High Energy Accelerator Research
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MANAKA Hirotaka
Department of Physics, Faculty of Science, Chiba University
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YAMADA Isao
Department of Physics, Faculty of Science, Chiba University
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Yamada Isao
Department Of Communications And Integrated Systems Tokyo Institute Of Technology
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Yamada Isao
Department Of Physics Faculty Of Science Chiba University
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Manaka Hirotaka
Department Of Nano-structure And Advanced Materials. Graduate School Of Science And Engineering Kago
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Manaka Hirotaka
Department Of Nano-structure And Advanced Materials Graduate School Of Science And Engineering Kagos
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Manaka Hirotaka
Department Of Cardiology The Heart Institute Of Japan Tokyo Women's Medical University
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Higemoto Wataru
Meson Science Laboratory Imss High Energy Accelerator Research Organization:(present Address)advance
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Yamada Isao
Departmen Of Communications And Integrated Systems Tokyo Institute Of Technology
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