Mean-Field Calculations for the Three-Dimensional Holstein
Model
LUO Qiang1,2 , LIU Chuan1
1 School of Physics, Peking University, Beijing 100871
2 State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871
Mean-Field Calculations for the Three-Dimensional Holstein
Model
LUO Qiang1,2 ;LIU Chuan1
1 School of Physics, Peking University, Beijing 100871
2 State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871
关键词 ：
75.10.Jm ,
71.10.Fd ,
71.10.Li ,
74.20.Mn ,
74.72.-h
Abstract ： The electron-phonon Holstein model is studied in three spatialc BaPb1-x Bix O3 and Bax K1-x BiO3 systems. Mean-field calculations are performed via a path integral representation of the model. Charge-density-wave order parameters and transition temperatures are obtained.
Key words ：
75.10.Jm
71.10.Fd
71.10.Li
74.20.Mn
74.72.-h
出版日期: 2002-08-01
:
75.10.Jm
(Quantized spin models, including quantum spin frustration)
71.10.Fd
(Lattice fermion models (Hubbard model, etc.))
71.10.Li
(Excited states and pairing interactions in model systems)
74.20.Mn
(Nonconventional mechanisms)
74.72.-h
(Cuprate superconductors)
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2002, Vol. 19 
