Consistent picture for resonance-neutron-peak and angle-resolved photoemission spectra in high-Tc superconductors

Jian-Xin Li; Chung-Yu Mou; T. K. Lee

doi:10.1103/PhysRevB.62.640

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Consistent picture for resonance-neutron-peak and angle-resolved photoemission spectra in high-Tc superconductors

Jian-Xin Li, Chung-Yu Mou, T. K. Lee

DOI 10.1103/PhysRevB.62.640 · Physical Review B

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Abstract

The spectra observed in angle-resolved photoemission spectroscopy measurements are examined together with the resonance peak observed in neutron scattering, based on the slave-boson approach to the t−t′−J model. We show that the peak/dip/hump features arise from the scattering of electrons by collective spin excitations which, at the same time, give rise to the neutron resonance mode. The doping dependences and the dispersions of the peak/dip/hump positions are shown to be consistent with experiments. The recently observed cos(6θ) deviation from the pure d wave is also discussed based on the renormalization by spin fluctuations.