Real-space observation of vortices and proximity effects on nano-size superconductors
| 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 |
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| 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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Report
(4 results)
Research Products
(46 results)
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[Journal Article] Electron compoud nature in a surface atomic layer of two-dimensional hexagonal lattice2010
Author(s)
Iwao Matsuda, Fumitaka Nakamura, Keisuke Kubo, Toru Hirahara, Shiro Yamazaki, Won Hoon Choi, Han Woong Yeom, Hisashi Narita, Yuki Fukaya, Mie Hashimoto, Atsuo Kawasuso, Masanori Ono, Yukio Hasegawa, Shuji Hasegawa, and Katsuyoshi Kobayashi
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Journal Title
Phys. Rev
Volume: B82
Pages: 1653301-6
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