Roles of High-Frequency Optical Phonons in the Physical Properties of the Conductive Delafossite PdCoO_2(Condensed matter : electronic structure and electrical, magnetic, and optical properties)
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概要
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We report physical properties of the conductive oxide PdCoO_2 in the layered delafossite structure through measurements of the electrical resistivity, specific heat, magnetic susceptibility, polarized Raman spectra and infrared absorption. We observed two prominent Raman peaks at 520 and 712cm^<-1>. The presence of these high frequency optical phonons is essential to explain the temperature dependence of the specific heat and the resistivity. No sign of superconductivity was detected in electrical resistivity and AC susceptibility down to 15mK.
- 社団法人日本物理学会の論文
- 2007-10-15
著者
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YONEZAWA Shingo
Department of Neurosurgery, Aomori Prefectural Central Hospital
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TAKATSU Hiroshi
Department of Physics, Graduate School of Science, Kyoto University
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MAENO Yoshiteru
Department of Physics, Graduate School of Science, Kyoto University
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Maeno Yoshiteru
Department Of Physics Graduate School Of Science Kyoto University
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Takatsu Hiroshi
Department Of Physics Graduate School Of Science Kyoto University
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Yonezawa Shingo
Department Of Physics Graduate School Of Science Kyoto University
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Yonezawa Shingo
Department Of Neurosurgery Aomori Prefectural Central Hospital
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NAKATSUJI Satoru
Department of Physics, Kyoto University
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TANAKA Koichiro
Department of Physics,Graduate School of Science,Kyoto University
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Maeno Yoshiteru
Department Of Physics Graduate School Of Science Kyoto University:international Innovation Center Ky
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Maeno Yoshiteru
Department Of Physics Faculty Of Science Hiroshima University
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MOURI Shinichiro
Department of Physics, Graduate School of Science, Kyoto University
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Mouri Shinichiro
Departement Of Physics Graduate School Of Science Kyoto University
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Mouri Shinichiro
Department Of Physics Graduate School Of Science Kyoto University
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Nakatsuji Satoru
Department Of Physics Graduate School Of Science Kyoto University:institute For Solid State Physics
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Tanaka Koichiro
Department Of Physics Kyoto University:inst. For Integrated Cell-material Sic. (icems) Kyoto Univ.
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Tanaka Koichiro
Department Of Physics Graduate School Of Science Kyoto University
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Tanaka Koichiro
Department Of Applied Biological Sciences Saga University
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