Temperature dependence of the optical spectral weight in the cuprates: Role of electron correlations

Details Temperature dependence of the optical spectral weight in the cuprates: Role of electron correlations Temperature dependence of the optical spectral weight in the cuprates: Role of electron correlations

2005-02-22

arxiv.org/abs/cond-mat/0502528v2

Phys. Rev. Lett. 95, 097002 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures. Minor corrections, corrected some typos and added references

Scientific paper

10.1103/PhysRevLett.95.097002

We compare calculations based on the Dynamical Mean-Field Theory of the Hubbard model with the infrared spectral weight $W(\Omega,T)$ of La$_{2-x}$Sr$_x$CuO$_4$ 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.

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