Kondo Effect in the Systems of Magnetic Trimers on a Metal Surface

Abstract

Calculating the local spectral densities at magnetic adatoms, we estimate the variation in the Yosida–Kondo resonance due to the Ruderman–Kittel–Kasuya–Yosida (RKKY) interaction and the direct exchange between adatoms in systems of magnetic trimers on metal surfaces. The results show that the RKKY interaction leads to the gradual variation in Kondo temperature, and the direct exchange can be the origin of the drastic variation.