Extremely High Frequency Dependence of Two-Dimensional Superfluid Onset(Condensed matter: structure and mechanical and thermal properties)
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概要
- 論文の詳細を見る
We observed the frequency dependence of the superfluid transition of ^4He films adsorbed on planar gold up to a very high frequency of 180MHz, using the overtone harmonic modes of a quartz crystal microbalance. The superfluid onset was observed at a temperature markedly higher than the Kosterlitz-Thouless (KT) transition temperature, the onset temperature in the low-frequency limit. The observed frequency dependence is surprisingly well reproduced by the dynamic theory close to the high-frequency condition where the vortex diffusion length in a period becomes as small as the vortex core diameter. We also observed that the superfluid vortex parameters depend strongly on the kind of substrate as well as on ^4He film thickness.
- 社団法人日本物理学会の論文
- 2009-03-15
著者
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Wada Nobuo
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Wada Nobuo
Department Of Physics Nagoya University
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Matsushita Taku
Department Of Physics Nagoya University
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Matsuda Kenji
Department Of Chemistry And Biochemistry Graduate School Of Engineering Kyushu University
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Kato Tsuyoshi
Department Of Orthopaedic And Spinal Surgery Graduate School Of Medicine Tokyo Medical And Dental Un
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HIEDA Mitsunori
Department of Physics, Nagoya University
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Hieda Mitsunori
Department Of Physics Nagoya University
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Matsuda Kenji
Department Of Physics Nagoya University
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Matsuda Kenji
Department Of Applied Chemistry Faculty Of Engineering Kyushu University
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Kato Tsuyoshi
Department Of Physics Nagoya University
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Kato Tsuyoshi
Department Of Chemistry Graduate School Of Science Tohoku University
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Wada Nobuo
Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo,
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MATSUSHITA Taku
Department of Environmental Engineering, Faculty of Engineering, Hokkaido University, Japan
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