Spatially dependent Kondo effect in Quantum Corrals

TL;DR

This paper investigates how the spatial structure of quantum corrals influences the Kondo effect, revealing spatially varying Kondo temperatures and multiple resonances, thus enabling new ways to control Kondo phenomena.

Contribution

It introduces the concept of spatially dependent Kondo screening in quantum corrals, highlighting the role of corral eigenmodes in modulating the effect.

Findings

Spatial variation of Kondo temperature $T_K$ observed.

Multiple Kondo resonances with distinct spatial patterns predicted.

Quantum corrals can be used to manipulate Kondo effects.

Abstract

We study the Kondo screening of a single magnetic impurity inside a non-magnetic quantum corral located on the surface of a metallic host system. We show that the spatial structure of the corral's eigenmodes lead to a spatially dependent Kondo effect whose signatures are spatial variations of the Kondo temperature, $T_K$. Moreover, we predict that the Kondo screening is accompanied by the formation of multiple Kondo resonances with characteristic spatial patterns. Our results open new possibilities to manipulate and explore the Kondo effect by using quantum corrals.