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A Consistent Picture for Resonance Neutron Peak and ARPES Spectra in High-Tc Superconductors
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abstract
The spectra observed in ARPES measurements are examined together with the resonance peak observed in neutron scatterings, based on the slave-boson approach to $t-t^{\prime}-J$ 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. Our results indicate that recently observed $\cos (6\theta)$ deviation from the pure d-wave also result from the renormalization by spin fluctuations.
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