Gap Formation in the Filled Skutterudite CeOs_4Sb_<12>
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概要
- 論文の詳細を見る
We have studied the optical conductivity of the filled skutterudite CeOs_4Sb_<12>. The optical conductivity spectra show a strong temperature dependence and reveal an energy gap of ∼30 meV below 60 K. This shows that the density of states near the Fermi level of CeOs_4Sb_<12> is strongly reduced. In addition to the gap formation, a pronounced peak is observed at ∼70 meV below 160K. This mid-infrared peak is interpreted in terms of optical excitations across a hybridization gap consisting of conduction- and f-electron states. The observed characteristics in the optical spectra are quite similar to those previously reported for Kondo semiconductors. We compare the optical characteristics of CeOs_4Sb_<12> found in the present work with other physical properties, and analyze its electronic structures.
- 社団法人日本物理学会の論文
- 2003-11-15
著者
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SATO Hideyuki
Department of Physics, Tokyo Metropolitan University
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SUGAWARA Hitoshi
Department of Physics, Tokyo Metropolitan University
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Nanba T
Graduate School Of Science And Technology Kobe University
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MATSUNAMI Masaharu
Graduate School of Science and Technology, Kobe University
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NANBA Takao
Graduate School of Science and Technology, Kobe University
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OKAMURA Hidekazu
Graduate School of Science and Technology, Kobe University
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Maple M
Univ. California California Usa
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Namiki T
Department Of Physics Tokyo Metropolitan University
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Nanba Takao
Department Of Physics Faculty Of Science Kobe University
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Nanba Takao
Graduate School Of Science And Technology Kobe University
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Matsunami Masaharu
Graduate School Of Science And Technology Kobe University
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Nakano T
Department Of Quantum Matter Adsm Hiroshima University
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Okamura Hidekazu
Graduate School Of Science And Technology Kobe University
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Matsunami M
Graduate School Of Science And Technology Kobe University
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Nanba Takao
Faculty Of Science Kobe University
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Shiozawa Hidetsugu
Department Of Physics Tokyo Metropolitan University
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Nakano Toshihiro
Department Of Quantum Matter Adsm Hiroshima University
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Matsuda M
Institute For Solid State Physics University Of Tokyo
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Maeda Masaki
Department Of Engineering Physics Electronics And Mechanics Graduate School Of Engineering Nagoya In
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Sakata H
Department Of Physics Tokyo Institute Of Technology
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Sato Hideyuki
Department Of Cardiology Osaka University Graduate School Of Medicine
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Sato Hideyuki
Department Of Applied Chemistry Faculty Of Science And Technology Keio University
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SUGAWARA Hitoshi
Department of Mathematical and Natural Sciences, Faculty of Integrated Arts and Sciences, The University of Tokushima
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NAKANO Tohru
Depertment of Physics, Chuo University
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Sugawara Hitoshi
Department of General Internal Medicine, Omiya Medical Center, Jichi Medical University
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