We compare calculations based on the dynamical mean-field theory of the Hubbard model with the infrared spectral weight W (Omega,T) of La2xSrxCuO4 and other cuprates. Without using fitting parameters we show that most of the anomalies found in W (Omega,T) with respect to normal metals, including the existence of two different energy scales for the doping and the T dependence of W(Omega, T) can be ascribed to strong correlation effects.
Temperature Dependence of the Optical Spectral Weight in the Cuprates: Role of Electron Correlations / Toschi, A.; Capone, M.; Ortolani, Michele; Calvani, Paolo; Lupi, Stefano; Castellani, Claudio. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 95:(2005), pp. 097002-097005. [10.1103/PhysRevLett.95.097002]
Temperature Dependence of the Optical Spectral Weight in the Cuprates: Role of Electron Correlations
ORTOLANI, MICHELE;CALVANI, PaoloInvestigation
;LUPI, Stefano;CASTELLANI, Claudio
2005
Abstract
We compare calculations based on the dynamical mean-field theory of the Hubbard model with the infrared spectral weight W (Omega,T) of La2xSrxCuO4 and other cuprates. Without using fitting parameters we show that most of the anomalies found in W (Omega,T) with respect to normal metals, including the existence of two different energy scales for the doping and the T dependence of W(Omega, T) can be ascribed to strong correlation effects.| File | Dimensione | Formato | |
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