Journal
PHYSICAL REVIEW B
Volume 75, Issue 4, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevB.75.041307
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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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