Superconducting order parameter in heavily overdoped $Bi_2 Sr_2 Ca Cu_2 O_{8+δ}$: a global quantitative analysis

Details Superconducting order parameter in heavily overdoped $Bi_2 Sr_2 Ca Cu_2 O_{8+δ}$: a global quantitative analysis Superconducting order parameter in heavily overdoped $Bi_2 Sr_2 Ca Cu_2 O_{8+δ}$: a global quantitative analysis

2004-02-09

arxiv.org/abs/cond-mat/0402247v2

Phys. Rev. B, 69, 220502(R) (2004)

Physics

Condensed Matter

Superconductivity

4 RevTex4 pages, 4 eps figures (Fig. 3 revised after publication on PRB)

Scientific paper

10.1103/PhysRevB.69.220502

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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