Pressure-induced Change in Temperature Coefficient of Electrical Resistivity in CeCuAs_2(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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The intermetallic compound, CeCuAs_2, crystallizing in a HfCuSi_2-type tetragonal structure, has recently been shown to exhibit a negative temperature (T) coefficient of electrical resistivity (ρ) in the entire T-range of investigation (45mK to 300K). Here, we report that an application of external pressure (up to 10GPa) profoundly influences ρ(T) behavior, reversing the sign of dρ/dT at pressures above 8 GPa, presumably arising from increasing 4f hybridization or changes in pseudo-gap. Such a behavior is uncommon among Ce-based intermetallic compounds.
- 社団法人日本物理学会の論文
- 2005-02-15
著者
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Jemetio J.P.F.
Trechnische Universitaet Dresden
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UWATOKO Yoshiya
Institute for Solid State Physics, The University of Tokyo
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Sampathkumaran E
Tata Institute Of Fundamental Research
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Abliz Melike
Graduate School Of Science Osaka University
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Abliz M
Institute For Solid State Physics University Of Tokyo
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Abliz Melike
Institute For Solid State Physics University Of Tokyo:(present Address)institute For Solid State Phy
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HEDO Masato
Institute for Solid State Physics, University of Tokyo
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Abliz Melike
Institute For Solid State Physics University Of Tokyo
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Hedo Masato
Institute For Solid State Physics (issp) University Of Tokyo
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Hedo Masato
Institute For Solid State Physics (issp) The University Of Tokyo
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Hedo Masato
The Institute For Solid State Physics The University Of Tokyo
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Namiki T
Department Of Physics Tokyo Metropolitan University
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Jemetio Jean
Institut Fur Anorganische Chemie Technische Universitat Dresden
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Doert Thomas
Institut Fur Anorganische Chemie Technische Universitat Dresden
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NAKANO Tomohito
Institute for Solid State Physics, University of Tokyo
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SAMPATHKUMARAN Echur
Tata Institute of Fundamental Research
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Nakano T
Department Of Quantum Matter Adsm Hiroshima University
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Nakano Tomohito
Institute For Solid State Physics University Of Tokyo
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Nakano Toshihiro
Department Of Quantum Matter Adsm Hiroshima University
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Uwatoko Yoshiya
Institute For Solid State Physics (issp) The University Of Tokyo
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DOERT Thomas
Institut fur Anorganische Chemie, Technische Universitat Dresden
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JEMETIO Jean
Institut fur Anorganische Chemie, Technische Universitat Dresden
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ABLIZ Melike
Institute for Solid State Physics, University of Tokyo
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Uwatoko Yoshiya
Institute for Solid State Physics
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