Theory of the quasiparticle excitation in high T$_{c}$ cuprates: quasiparticle charge and nodal-antinodal dichotomy

Fan Yang; Tao Li

doi:10.1103/physrevb.83.064524

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arXiv · 1008.0572

Theory of the quasiparticle excitation in high T$_{c}$ cuprates: quasiparticle charge and nodal-antinodal dichotomy

Fan Yang·Tao Li

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Abstract

A variational theory is proposed for the quasiparticle excitation in high T$_{c}$ cuprates. The theory goes beyond the usual Gutzwiller projected mean field state description by including the spin-charge recombination effect in the RVB background. The spin-charge recombination effect is found to qualitatively alter the behavior of the quasiparticle charge as a function of doping and cause considerable anisotropy in quasiparticle weight on the Fermi surface.

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Fan Yang, Tao Li. 2010-08-03. Theory of the quasiparticle excitation in high T$_{c}$ cuprates: quasiparticle charge and nodal-antinodal dichotomy. https://doi.org/10.1103/physrevb.83.064524

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