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Anisotropic penetration depth and optical sum rule violation in La_(2-x)Sr_xCuO_4

We calculate the doping dependence of the penetration depths and optical sum rule violation in La_(2-x)Sr_xCuO_4 within the model of hole superconductivity. In the clean limit the predicted in-plane sum rule violation is larger than the c-axis one, however in the presence of disorder the latter one becomes very substantially enhanced.

preprint2000arXivOpen access
F. MarsiglioJ. E. Hirsch
cond-mat.supr-concond-mat.str-el
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F. MarsiglioJ. E. Hirsch

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