Neutron resonance in the cuprates and its effect on fermionic excitations.
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).
Abanov
Ar
A
Theory Division, Los Alamos National Laboratory, MS B262, Los Alamos, New Mexico 87545, USA.
Chubukov
A V
AV
Eschrig
M
M
Norman
M R
MR
Schmalian
J
J