Superconducting order parameter in heavily overdoped Bi₂ Sr₂ Ca Cu₂ O_(8+δ): a global quantitative analysis
classification
❄️ cond-mat.supr-con
cond-mat.mtrl-scicond-mat.str-el
keywords
analysisdeltaheavilyorderoverdopedparametercacucoherent
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A systematic analysis of the complex lineshape at $(\pi,0)$ of heavily overdoped Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ is presented. We show that a coherent component in the quasi-particle excitation is correlated with the superfluid density throughout the entire doping range and suggest it is a direct measure of the order parameter of high temperature superconductors.
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