| Project/Area Number |
21360018
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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 |
Thin film/Surface and interfacial physical properties
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
EGUCHI Toyoaki 慶應義塾大学, 大学院・理工学研究科, 特任准教授(兼務) (70308196)
HAMADA Masayuki 東京大学, 物性研究所, 技術専門職員 (00396920)
YOSHIDA Yasuo 東京大学, 物性研究所, 助教 (10589790)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2011: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
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| Keywords | 走査トンネル顕微鏡 / 走査トンネル分光 / メゾスコピック超伝導 / 薄膜超伝導 / 量子化磁束 / 渦糸 / ナノサイズ超伝導 / 超伝導 / 近接効果 |
|---|
| Research Abstract |
Using a scanning tunneling microscopy which can be operated under ultrahigh vacuum, low-temperature(0. 4K), and high magnetic field(7 T), we have studied superconductivity of nano-size Pb superconductors, in particular, vortex formation into the tiny superconductors under magnetic fields. By controlling the size of the nano-size superconductors, we have succeeded in real-space observations of various vortex configurations unique to nano-size superconductors, such as vortex clustering and giant vortex. We also found that the tunneling current can excite a vortex into nano-size superconductors and studied its excitation mechanism.
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