Publications (14)
Competition between spin exchange and correlated hopping
Y. Saiga, M. Imada
The ground-state phase diagram is numerically studied for an electronic model consisting of the spin exchange term (J) and the correlated hopping term (t_3: the three-site term). T…
Exploring the Dark Side of Cuprate Superconductors: s-wave Symmetry of the Pseudogap
S. Sakai, S. Blanc, M. Civelli +12
We reveal the full energy-momentum structure of the pseudogap of underdoped high-Tc cuprate superconductors. Our combined theoretical and experimental analysis explains the spectra…
{\it Ab initio} Studies on the Interplay between Spin-Orbit Interaction and Coulomb Correlation in SrIrO and BaIrO
R. Arita, J. Kuneš, A. V. Kozhevnikov +2
{\it Ab initio} analyses of AIrO (A=Sr, Ba) are presented. Effective Hubbard-type models for Ir 5 manifolds downfolded from the global band structure are solved…
Frequency-dependent local interactions and low-energy effective models from electronic structure calculations
F. Aryasetiawan, M. Imada, A. Georges +3
We propose a systematic procedure for constructing effective models of strongly correlated materials. The parameters, in particular the on-site screened Coulomb interaction U, are…
Hole Dynamics in Two-Dimensional Antiferromagnetic Mott Insulators
F. F. Assaad, M. Imada
The dispersion relation of a doped hole in the half-filled 2D Hubbard model is shown to follow a k^4 law around the (0,pi) and (pi,0) points in the Brillouin zone. Upon addition of…
Exciton dynamics uncovering electron fractionalization in superconducting cuprates
A. Singh, H. Y. Huang, J. D. Xie +6
Electron quasiparticles play a crucial role in simplifying the description of many-body physics in solids with surprising success. Conventional Landau's Fermi-liquid and quasiparti…