2009 Fiscal Year Final Research Report
Terahertz time-domain reflection study on high-Tc cuprates
| Project/Area Number |
20840028
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| Research Category |
Grant-in-Aid for Young Scientists (Start-up)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | Osaka University |
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Principal Investigator |
TANAKA Kiyohisa Osaka University, 大学院・理学研究科, 助教 (60511003)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 強相関電子系 / 酸化物高温超伝導 / テラヘルツ / 光学測定 / 低温物性 |
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| Research Abstract |
In this research, we focused on terahertz wave, which has not been used for a long time because of the lack of the proper way to generate and detect, and we used it for the spectroscopy measurement. We have developed a terahertz time-domain spectroscopy (THz-TDS) system and measured reflectivity spectra of high-Tc superconductor La_<2-x>Sr_xCuO_4 (x=0.10, 0.12, 0.13, 0.15). We found double-Josephson-plasma like behavior in the reflectivity and the optical conductivity only for x=0.13 which has spin and charge stripe order.
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