Af. Barabanov et al., REDISTRIBUTION OF THE HOLE SPECTRAL WEIGHT DUE TO LONG-RANGE SPIN CORRELATIONS IN THE 3-BAND HUBBARD-MODEL, JETP letters, 66(3), 1997, pp. 182-187
The spectrum of the spin-polaron hole exitation is investigated in the
framework of the three-band model for the CuO2 plane in high-temperat
ure superconductors. The problem is treated taking into account the co
upling of a local polaron with the antiferromagnetic spin wave with Q=
(pi,pi). This leads to fundamental changes in the lowest polaron band
epsilon(1)(k) and to a strong redistribution of the bare electron fill
ing. (C) 1997 American Institute of Physics.