R. Egger et H. Schoeller, RKKY INTERACTION AND KONDO SCREENING CLOUD FOR STRONGLY CORRELATED ELECTRONS, Physical review. B, Condensed matter, 54(23), 1996, pp. 16337-16340
The RKKY law and the Kondo screening cloud around a magnetic impurity
are investigated for correlated electrons in one dimension (Luttinger
liquid). We find slow algebraic distance dependences, with a crossover
between both types of behavior. Monte Carlo simulations have been dev
eloped to study this crossover. In the strong-coupling regime, the Kni
ght shift is shown to increase with distance due to correlations.