2012 Fiscal Year Final Research Report
Anisotropic dielectric response of tilted Dirac cone investigated by polarized infrared light using synchrotron radiation
| Project/Area Number |
22654038
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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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 | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
OKAMURA Hidekazu 神戸大学, 理学研究科, 准教授 (00273756)
IKEMOTO Yuka (財)高輝度光科学研究センター, 利用研究 促進部門, 副主幹研究員 (70344398)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 有機導体 / ディラック電子 / 赤外分光 / 放射光 / 高圧力 |
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| Research Abstract |
We have succeeded to measure the polarized infrared optical reflectance spectra of the organic conductor α-(BEDT-TTF)_2I_3 under high pressures, which possesses Dirac electronic state. Pressure variation of the characteristic optical spectra with less energy dispersion in the Dirac state was observed. In this study, we developed the experimental method of the polarized microscope optical reflectance measurements using the synchrotron radiation light for the small organic materials in the Diamond Anvil cell (DAC).
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