Electronic structure of charge-spin stripe ordered high-Tc cuprates
Project/Area Number |
24740234
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Condensed matter physics II
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Research Institution | Institute for Molecular Science (2014) Osaka University (2012-2013) |
Principal Investigator |
TANAKA Kiyohisa 分子科学研究所, 極端紫外光研究施設, 准教授 (60511003)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
Keywords | 銅酸化物高温超伝導体 / 強相関電子系 / テラヘルツ / 光学測定 / 高温超伝導体 / ストライプ秩序 / 高温超伝導 / 国際情報交換 |
Outline of Final Research Achievements |
In this research, I performed two powerful spectroscopy measurements (terahertz time-domain spectroscopy and angle-resolved photoemission spectroscopy (ARPES)) on charge-spin stripe ordered high-Tc cuprates to clarify the intrinsic electronic structure of stripe order. From terahertz time-domain spectroscopy, I found that the superconducting signal still survives in the extremely low energy region, where the conventional far-infrared spectroscopy can not detect. ARPES measurements reveals that the superconducting pair strength observed as a superconducting energy gap, is getting smaller with stabilizing stripe order. Our finding settle down the longstanding problem if the stripe order enhance or suppress the superconducting gap.
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Report
(4 results)
Research Products
(7 results)