Kondo Effect of a Magnetic Ion Vibrating in a Harmonic Potential
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概要
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To discuss Kondo effects of a magnetic ion vibrating in the sea of conduction electrons, a generalized Anderson model is derived. The model includes a new channel of hybridization associated with phonon emission or absorption. In the simplest case of the localized electron orbital with the s-wave symmetry, hybridization with p-waves becomes possible. An interesting interplay among the conventional s- and p-wave Kondo effects and the Yu--Anderson-type Kondo effect is found, and the ground state phase diagram is determined by using the numerical renormalization group method. Two different types of stable fixed points are identified and the two-channel Kondo fixed points are generically realized at the boundary.
- 2011-06-15
著者
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Kirino Shunsuke
Institute For Solid State Physics University Of Tokyo
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Ueda Kazuo
Institiute For Solid State Physics University Of Tokyo
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Hattori Kazumasa
Institute For Solid State Physics University Of Tokyo
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Kirino Shunsuke
Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Yashiki Satoshi
Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Hattori Kazumasa
Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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