T. Xiang et Jm. Wheatley, QUASI-PARTICLE ENERGY DISPERSION IN DOPED 2-DIMENSIONAL QUANTUM ANTIFERROMAGNETS, Physical review. B, Condensed matter, 54(18), 1996, pp. 12653-12656
The quasiparticle dispersion in the one-hole t-t'-t ''-J model is stud
ied. Both finite-size diagonalization and the self-consistent Born-app
roximation calculations have been performed and compared. The quasipar
ticle band structures in the hole- and electron-doped high-T-c cuprate
s are qualitatively different. In the hole-doped compounds, the band m
axima are located at (+/-pi/2,+/-pi/2), while in the electron-doped co
mpounds the band maxima are located at (pi,0) and its equivalent point
s. The angle-resolved photoemission data for the quasiparticle dispers
ion of Sr2CuO2Cl2 can be quantitatively reproduced using the one-band
t-t'-t ''-J model with the three-site hopping term.