Heavy Fermion Aspects of Strong Electron-Phonon Coupling Compound
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概要
- 論文の詳細を見る
Heavy fermion aspects of strong electron-phonon coupling compounds are dis-cussed on the basis of the idea that two-level systems (TLS) play a role of the localizedspins in the dense Kondo system. Using the Vladar and Zawadowski's results that, atlow temperatures, a single TLS interacting with electrons can be transformed to spin-1/2 Kondo system, it is shown that a heavy fermion band is formed through thecoherence among virtual bound states around each TLS. The effective interaction be-tween thus obtained heavy fermions consists of on-site repulsion and intersite attrac-lion; so that the Cooper pair becomes inevitably anisotropic. It is shown that thelocal-phonon model can be transformed to TLS when the adiabatic potential for anton becomes double-well. For this, it is essential to take into account the termquadratic in Tonic displacement in the local-phonon model.
- 社団法人日本物理学会の論文
- 1986-02-15
著者
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Tamifusa Matsuura
Department Of Physics Nagoya University
-
Matsuura Tamifusa
Department Of Physics Nagoya University
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Miyake Kazumasa
Department Of Internal Medicine Division Of Gastroenterology Nippon Medical School
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