Two-Mode Variational Monte Carlo Study of Quasiparticle Excitations in Cuprate Superconductors
Two-Mode Variational Monte Carlo Study of Quasiparticle Excitations in Cuprate Superconductors
Recent measurements of quasiparticles in hole-doped cuprates revealed highly unusual features: (i) the doping-independent Fermi velocity, (ii) two energy scales in the quasiparticle spectral function, and (iii) a suppression of the low-energy spectral weight near the zone center. We explain these important facts by a novel two-mode variational Monte Carlo …