A Kondo impurity in one dimensional correlated conduction electrons
Xiaoqun Wang (Max-Planck-Institut f\"ur Physik komplexer Systeme,, Dresden Germany)
TL;DR
This paper investigates how a magnetic impurity interacts with a one-dimensional correlated electron system, revealing that strong repulsive interactions enhance the Kondo temperature and that the impurity exhibits local Fermi liquid behavior at zero temperature.
Contribution
It provides a detailed analysis of the Kondo effect in one-dimensional correlated electrons using the density renormalization group method, highlighting the effects of electron interactions on impurity behavior.
Findings
Kondo temperature is increased by strong repulsive interactions.
Kondo temperature varies non-monotonically with electron attraction.
Impurity magnetization shows local Fermi liquid behavior at zero temperature.
Abstract
A spin-1/2 magnetic impurity coupled to a one-dimensional correlated electron system have been studied by applying the density renormalization group method. The Kondo temperature is substantially enhanced by strong repulsive interactions in the chain, but changes non-monotonically in the case of electron attraction. The magnetization of the impurity at zero- temperature shows local Fermi liquid behavior.
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