G. Rebecchi et M. Acquarone, HOLE DOPING DEPENDENCE OF THE EFFECTIVE EXCHANGE IN LA2-DELTA-SR-DELTA-CUO4, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 16(10-11), 1994, pp. 1769-1776
We provide a microscopic modelling of the strong variation of the effe
ctive exchange interaction J(eff) between Cu2+ spins as a function of
hole doping delta in La2-deltaSrdeltaCuO4, as derived from complementa
ry Raman scattering and paramagnetic susceptibility data.