On the Doping and Temperature Dependence of the Mass Enhancement Observed in the Cuprate Bi2212

Details On the Doping and Temperature Dependence of the Mass Enhancement Observed in the Cuprate Bi2212 On the Doping and Temperature Dependence of the Mass Enhancement Observed in the Cuprate Bi2212

2001-02-14

arxiv.org/abs/cond-mat/0102260v2

Phys. Rev. Lett. 87, 177007 (2001)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevLett.87.177007

High-resolution photoemission is used to study the electronic structure of the cuprate superconductor, Bi2212, as a function of hole doping and temperature. A kink observed in the band dispersion in the nodal direction in the superconducting state is associated with coupling to a resonant mode observed in neutron scattering. From the measured real part of the self energy it is possible to extract a coupling constant which is largest in the underdoped regime, then decreasing continuously into the overdoped regime.

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