2013 Fiscal Year Final Research Report
Electronic structures near quantum critical points studied by infrared spectroscopy under high pressure
| Project/Area Number |
23540409
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Kobe University |
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Principal Investigator |
OKAMURA Hidekazu 神戸大学, 理学(系)研究科(研究院), 准教授 (00273756)
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| Co-Investigator(Renkei-kenkyūsha) |
MORIWAKI Taro 高輝度光科学研究センター, 副主幹研究員 (90372143)
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| Project Period (FY) |
2011 – 2013
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| Keywords | SrFe2As2 / CeRhIn5 / 赤外分光 / シンクロトロン放射光 / 高圧力 / ダイヤモンドアンビルセル / 電子状態 |
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| Research Abstract |
In this work, the electronic structures of SrFe2As2 and CeRhIn5 were studied under high pressure up to 8 GPa (80,000 bar) and at low temperatures down to 6 K using infrared spectroscopy. These compounds become superconducting under high pressure above 4 GPa (SrFe2As2) and 2 GPa (CeRhIn5), and have attracted a lot of recent interest from condensed matter physicists. To generate high pressure, a diamond anvil cell (DAC) was used, and to perform infrared spectroscopy on a small sample contained in DAC, the highly bright, infrared synchrotron radiation from SPring-8 was utilized. The measured results showed that the electronic structures of these compounds are strongly affected by the external pressure, which were analyzed in detail.
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Research Products
(21 results)
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[Journal Article] Pressure suppression of unconventional charge-density-wave state in PrRu4P1 2 studied by optical conductivity2012
Author(s)
H. Okamura, N. Ohta, A. Takigawa, I. Matsutori, K. Shoji, K. Miyata, M. Matsunami, H. Sugawara, C. Sekine, I. Shirotani, H. Sato, T. Moriwaki, Y. Ikemoto, Z. Liu, G. L. Carr
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Journal Title
Phys. Rev. B
Volume: 85
Pages: 205115, 5
DOI
Peer Reviewed
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[Journal Article] Suppression of Metal-Insulator Transition in PrRu4P1 2 under High Pressure Studied by Infrared Spectroscopy2011
Author(s)
H. Okamura, I. Matsutori, A. Takigawa, K. Shoji, K. Miyata, M. Matsunami, H. Sugawara, H. Sato, C. Sekine, I. Shirotani, T. Moriwaki, Y. Ikemoto, T. Nanba
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Journal Title
J. Phys. Soc. Jpn
Volume: 80
Pages: SA092, 3
DOI
Peer Reviewed
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