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- Watanabe Michio
- Cryogenic Center, University of Tokyo, Yayoi 2–11–16, Bunkyo–ku, Tokyo 113
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- Shimada Hiroshi
- Cryogenic Center, University of Tokyo, Yayoi 2–11–16, Bunkyo–ku, Tokyo 113
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- Kobayashi Shun–ichi
- Department of Physics, School of Science, University of Tokyo, Hongo 7–3–1, Bunkyo–ku, Tokyo 113
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- Ootuka Youiti
- Cryogenic Center, University of Tokyo, Yayoi 2–11–16, Bunkyo–ku, Tokyo 113
書誌事項
- タイトル別名
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- Superconductor-Insulator Transition in
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To study the superconductor-insulator (SI) transition in two-dimensional systems, we measured electrical resistance of Sn granular films with 24 nm grains over a temperature range from 9 K to 50 mK. A distinct SI transition was observed when the normal-conducting sheet resistance RN is increased, showing that neither flat tail nor quasi reentrance is the intrinsic effect in granular systems. If we define RN as the sheet resistance at 77 K, the critical sheet resistance Rc for the SI transition exists between 6.0 kΩ and 6.9 kΩ. For the samples which showed superconductivity at low temperatures, we analyzed the resistance based on the vortex Kosterlitz-Thouless (KT) transition. Evaluating from the extrapolation of KT transition temperature Tc→0, Rc is 6.4 kΩ, which is very close to RQ≡h/4e2.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 66 (5), 1419-1426, 1997
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204182059776
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- NII論文ID
- 210000100102
- 110001970421
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- NII書誌ID
- AA00704814
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- BIBCODE
- 1997JPSJ...66.1419W
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 4219818
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可