Variational study of the neutron resonance mode in the cuprate superconductors
Tao Li, Fan Yang
DOI 10.1103/PhysRevB.81.214509 · Physical Review B
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Abstract
A Gutzwiller-type variational wave function is proposed for the neutron resonance mode in the cuprate superconductors. An efficient reweighting technique is devised to perform variational Monte Carlo simulation on the proposed wave function which is composed of linearly superposed Gutzwiller projected Slater determinants. The calculation, which involves no free parameter, predicts qualitatively correct behavior for both the energy and the spectral weight of the resonance mode as functions of doping.
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