Kondo screening cloud in a one-dimensional wire: Numerical renormalization group study

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Abstract

We study the Kondo model-a magnetic impurity coupled to a one-dimensional wire via exchange coupling-by using Wilson's numerical renormalization group technique. By applying an approach similar to which was used to compute the two-impurity problem we managed to improve the poor spatial resolution of the numerical renormalization group method. In this way we have calculated the impurity-spin-conduction-electron-spin correlation function which is a measure of the Kondo compensation cloud whose existence has been a long-standing problem in solid-state physics. We also present results on the temperature dependence of the Kondo correlations.

Original languageEnglish
Article number041307
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume75
Issue number4
DOIs
Publication statusPublished - 2007

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Screening
screening
wire
Wire
Impurities
impurities
Solid state physics
Exchange coupling
solid state physics
renormalization group methods
electron spin
conduction electrons
spatial resolution
temperature dependence
Electrons
Temperature
Compensation and Redress

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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abstract = "We study the Kondo model-a magnetic impurity coupled to a one-dimensional wire via exchange coupling-by using Wilson's numerical renormalization group technique. By applying an approach similar to which was used to compute the two-impurity problem we managed to improve the poor spatial resolution of the numerical renormalization group method. In this way we have calculated the impurity-spin-conduction-electron-spin correlation function which is a measure of the Kondo compensation cloud whose existence has been a long-standing problem in solid-state physics. We also present results on the temperature dependence of the Kondo correlations.",
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AB - We study the Kondo model-a magnetic impurity coupled to a one-dimensional wire via exchange coupling-by using Wilson's numerical renormalization group technique. By applying an approach similar to which was used to compute the two-impurity problem we managed to improve the poor spatial resolution of the numerical renormalization group method. In this way we have calculated the impurity-spin-conduction-electron-spin correlation function which is a measure of the Kondo compensation cloud whose existence has been a long-standing problem in solid-state physics. We also present results on the temperature dependence of the Kondo correlations.

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