Phonon effects on a multichannel resonance-level model
Qing-Shan Yuan; Hong Chen; Yu-Mei Zhang; Yu-Guang Chen; Xiang Wu; Qing-Shan Yuan; Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, People's Republic of China; Hong Chen; Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, People's Republic of China; Yu-Mei Zhang; Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, People's Republic of China; Yu-Guang Chen; Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, People's Republic of China; Xiang Wu; Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, People's Republic of China
Журнал:
Journal of Physics: Condensed Matter
Дата:
1997-09-01
Аннотация:
The phonon effects on a multichannel resonant-level model have been studied by a bosonization technique and canonical transformations. We found that the model can be mapped onto a single-channel Kondo model and the non-Fermi-liquid transition is modified by local electron - phonon interaction. At strong interaction, only one channel of conducting electrons is necessary in order to realize this transition and it is the phonon effects that control the behaviour of the system.
137.8Кб