| Project/Area Number |
07454072
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
固体物性Ⅱ(磁性・金属・低温)
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| Research Institution | HOKKAIDO UNIVERSITY |
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Principal Investigator |
MATSUDA Yuji Department of Physics, Faculty of Science, Hokkaido University Associate Professor, 大学院・理学研究科, 助教授 (50199816)
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| Co-Investigator(Kenkyū-buntansha) |
KOMIYAMA Susumu University of Tokyo, Department of Pureand Applied Sciences, Professor, 大学院・総合文化研究科, 教授 (00153677)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥7,400,000 (Direct Cost: ¥7,400,000)
Fiscal Year 1996: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1995: ¥6,900,000 (Direct Cost: ¥6,900,000)
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| Keywords | Josephson Effect / High-Tc Superconductor / Josephson Plasma / Quasiparticle / Cooper Pair / Microwave / Cyclotron Resonance / プラズマ / Bi_2Sr_2CaCu_2O_<8+δ> / 渦糸状態 / デカップリング / ビーン臨界状態 / 渦糸格子 / パンケーキ渦 / マイクロ波吸収 / ジョセフン効果 / 位相コヒーレンス / 混合状態 / 高温超伝導 |
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| Research Abstract |
The most important result in this research is the discovery of the Josephson plasma resonance. It has been already reported an anomalous microwave absorption in the vortex state of Bi_2Sr_2CaCu_2O_<8+delta>, which is one of the most anisotropic material in high temperature superconductors. This phenomena has been explained by such as cyclotron resonance of the quasiparticle. However, by measuring the microwave absorption in geometry of the several different geometries, we uncovered that this resonance arises from the Josephson plasma oscillation mode.
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