VUV laser angular-resolved-photoemission spectroscopy on high-T, superconductors
Project/Area Number |
19740198
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Single-year Grants |
Research Field |
Condensed matter physics II
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Research Institution | The University of Tokyo |
Principal Investigator |
ISHIZAKA Kyoko The University of Tokyo, 物性研究所, 助教 (20376651)
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Project Period (FY) |
2007 – 2008
|
Project Status |
Completed (Fiscal Year 2008)
|
Budget Amount *help |
¥3,690,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2007: ¥2,000,000 (Direct Cost: ¥2,000,000)
|
Keywords | 高温超伝導 / 光電子分光 / 強相関電子系 / レーザー / 物性実験 |
Research Abstract |
真空紫外レーザー超高分解能光電子分光装置を用いて、高温超伝導銅酸化物の研究を行った。自然幅の小さいレーザーを用いることでこれまで報告された中で最も明瞭で鋭いスペクトルを得ることに成功し、超伝導ギャップのゼロ点(ノード)近傍の電子構造やキャリア特性を明らかにした。また、表面金属状態が強く内部の超伝導状態を覆い隠してしまうため従来光電子分光が困難だったYBa_2Cu_3O_<7-δ>系において、バルク敏感性を活かし、超伝導状態の直接観測に成功した。
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Report
(3 results)
Research Products
(19 results)
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[Journal Article] Superconducting electronic state in optimally doped YBa_2Cu_3O_<7-δ> observed with laser-excited angle-resolved photoemission spectroscopy2009
Author(s)
M. Okawa, K. Ishizaka, H. Uchiyama, H. Tadatomo, T. Masui, S. Tajima, X.-Y. Wangm C.-T. Chen, S. Watanabe, A. Chainani, T. Saitoh, S. Shin
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Journal Title
Related Report
Peer Reviewed
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[Journal Article] Doping dependence of nodal quasiparticles properties in high-Tc cuprates studied by laser-excited angular-resolved photoemission spectroscopy2008
Author(s)
K. Ishizaka, T. Kiss, S. Izumi, M. Okawa, T. Shimojima, A. Chainani, T. Togashi, S. Watanabe, C.-T. Chen, X. Y. Wang, T. Mochiku, T. Nakane, K. Hirata, S. Shin
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Journal Title
Related Report
Peer Reviewed
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[Journal Article] A versatile system for ultrahigh resolution, low temperature, and polarization dependent laser angle-resolved photoemission spectroscopy2008
Author(s)
T. Kiss, T. Shimojima, K. Ishizaka. A. Chainani, T. Togashi, T. Kanai, X.-Y. Wang, C.-T. Chen, S. Watanabe, S. Shin
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Journal Title
Review of Scientific Instruments 79
Related Report
Peer Reviewed
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