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Neutron resonance in the cuprates and its effect on fermionic excitations
Ar Abanov1, A V Chubukov, M Eschrig
1Theory Division, Los Alamos National Laboratory, MS B262, Los Alamos, New Mexico 87545, USA.
Physical Review Letters
|October 26, 2002
Abstract:
We argue that the exciton scenario for the magnetic resonance in the cuprate superconductors yields a small spectral weight of the resonance, in agreement with experiment. We show that the small weight is related to its concentration in a small region of momentum and energy. Despite this, we find that a large fermionic self-energy can indeed be generated by a resonance with such properties, i.e., the scattering from the resonance substantially affects the electronic properties of the cuprates below T(c).