Doping and Temperature Dependence of the Mass Enhancement Observed in the Cuprate
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- 8 October 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 87 (17) , 177007
- https://doi.org/10.1103/physrevlett.87.177007
Abstract
High-resolution photoemission is used to study the electronic structure of the cuprate superconductor, , as a function of hole doping and temperature. A kink observed in the band dispersion in the nodal line 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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