Kondo Effect and Mutual Interaction in One-Dimension

Abstract

In one-dimension, effects of mutual interaction on the Kondo model is studied by using the renormalization group method and found that effective strong interaction suppresses the Kondo effect. When the backscattering g₁ between electrons is positive, the Kondo effect is not too much weakened in a wide coupling region of mutual interaction. In the case of g₁<0, the Kondo anomaly disappears when the absolute value of g₁ exceeds the strength of the exchange coupling between the localized spin and conduction electrons. Furthermore, the Kondo temperature depending on the mutual interaction is obtained.