Effect of the magnetic resonance on the electronic spectra of high Tc superconductors

Abstract

We explain recent experimental results on the superconducting state spectral function as obtained by angle resolved photoemission, as well as by tunneling, in high Tc cuprates. In our model, electrons are coupled to the resonant spin fluctuation mode observed in inelastic neutron scattering experiments, as well as to a gapped continuum. We show that, although the weight of the resonance is small, its effect on the electron self energy is large, and can explain various dispersion anomalies seen in the data. In agreement with experiment, we find that these effects are a strong function of doping. We contrast our results to those expected for electrons coupled to phonons.

24 pages, revtex4, 22 encapsulated postscript figures

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• Magnetic Resonant Mode in the Single-Layer High Temperature Superconductor Tl${}_2$Ba${}_2$Cu${}_{6+\delta }$
• The neutron resonance in the cuprates and its effect on fermionic excitations
• Dispersion Anomalies in Bilayer Cuprates and the Odd Symmetry of the Magnetic Resonance

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