Local Heavy Quasiparticle in Four-Level Kondo Model(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
- 論文の詳細を見る
An impurity four-level Kondo model, in which an ion is tunneling among 4-stable points and interacting with surrounding conduction electrons, is investigated using both perturbative and numerical renormalization group methods. The results of numerical renormalization group studies show that it is possible to construct the ground state wavefunction including the excited ion states if we take into account the interaction between the conduction electrons and the ion. The resultant effective mass of quasiparticles is moderately enhanced. This result offers a good explanation for the enhanced and magnetically robust Sommerfeld coefficient observed in SmOs_4Sb_<12>, some other filled-skutterudites, and clathrate compounds.
- 社団法人日本物理学会の論文
- 2005-12-15
著者
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HATTORI Kazumasa
Division of Materials Physics, Department of Materials Engineering Science, Graduate School of Engin
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Miyake Kazumasa
Division Of Endocrine Surgery Kawasaki Medical School.
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Kosaki Masato
Graduate_school Of Science Osaka University
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HIRAYAMA Yosuke
Division of Materials Physics, Department of Materials Engineering Science
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Hattori Kazumasa
Univ. Tokyo Chiba
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Hattori Kazumasa
Division Of Materials Physics Department Of Materials Engineering Science Graduate School Of Enginee
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