Novel superconductivity and magnetism of heavy fermion systems with high-field and low-temperature scanning tunneling microscopy
Project/Area Number |
25707025
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Partial Multi-year Fund |
Research Field |
Condensed matter physics I
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Research Institution | The University of Tokyo |
Principal Investigator |
Yoshida Yasuo 東京大学, 物性研究所, 助教 (10589790)
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Project Period (FY) |
2013-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥26,780,000 (Direct Cost: ¥20,600,000、Indirect Cost: ¥6,180,000)
Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2013: ¥21,190,000 (Direct Cost: ¥16,300,000、Indirect Cost: ¥4,890,000)
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Keywords | 軌道秩序 / 重い電子系超伝導 / 重い電子系超伝導体 / 走査トンネル顕微鏡 / 超低温 / 強磁場 |
Outline of Final Research Achievements |
We utilize low-temperature scanning tunneling microscope (STM) in high magnetic fields to investigate the unconventional superconductor CeCoIn5 whose superconducting pairing mechanism is not yet clarified. We cleaved the sample in our ultra-high-vacuum chamber and performed STM measurements without exposing to the air. We reduced the tip-sample distance extremely by precisely controlling the tip height, we discovered for the first time the emergence of surface-induced orbital ordering of d-orbitals of cobalt atoms at top surfaces. This orbital order coexists with the superconductivity and therefore it might provide a new insight for understanding of the superconductivity of this material.
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Report
(5 results)
Research Products
(89 results)
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[Journal Article] Unusual Magnetic Ordering Observed in Nanosized S = 1/2 Quantum Spin System (CH3) 2NH2CuCl 32014
Author(s)
Yuji Inagaki, Yasutaka Sakamoto, Hiroki Morodomi, Tatsuya Kawae, Yasuo Yoshida, Takayuki Asano, Kohei Hosoi, Hirokazu Kobayashi, Hiroshi Kitagawa, Yoshitami Ajiro, and Yuji Furukawa
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Journal Title
J. Phys. Soc. Jpn
Volume: 83
Issue: 5
Pages: 54716-54716
DOI
NAID
Related Report
Peer Reviewed
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[Presentation] Visualization of superconductiveity and magnetism in a heavy Fermion superconductor CeCoIn52015
Author(s)
Yasuo Yoshida, Howon Kim, Yoshinori Haga, Naoyuki Tateiwa, Michi-to Suzuki, Robert Peters, Ryotaro Arita, Chi-Cheng Lee, Hsin Lin, Zachary Fisk, Yukio Hasegawa
Organizer
九州大学量子ナノスピン物性研究センター研究会
Place of Presentation
九州大学伊都キャンパス(福岡県福岡市)
Year and Date
2015-02-06
Related Report
Invited
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[Presentation] スピンを見る顕微鏡2014
Author(s)
吉田靖雄
Organizer
東邦大学物理学科コロキウム
Place of Presentation
東邦大学習志野キャンパス(千葉県船橋市)
Year and Date
2014-06-28
Related Report
Invited
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[Presentation] スピンを見る顕微鏡2013
Author(s)
吉田靖雄
Organizer
第2回関西若手物性研究会
Place of Presentation
大阪大学豊中キャンパス(大阪府豊中市)
Year and Date
2013-11-09
Related Report
Invited
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[Presentation] 単一原子・磁気イメージング2013
Author(s)
吉田靖雄
Organizer
2013年 日本物理学会秋季大会
Place of Presentation
徳島大学常三島キャンパス(徳島県徳島市)
Year and Date
2013-09-26
Related Report
Invited
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[Presentation] スピンを見る顕微鏡2013
Author(s)
吉田靖雄
Organizer
駒場物性セミナー
Place of Presentation
東京大学駒場キャンパス(東京都目黒区)
Year and Date
2013-06-07
Related Report
Invited
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