2006/02/28 by T. Hand, J. Kroha, H. Monien · 3 citations
Physics and Astronomy · #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.97.136604
published as Phys. Rev. Lett. 97, 136604 (2006) · 4 pages, 5 figures; Phys. Rev. Lett. published version; includes improved discussion of the long-distance behavior of the spin correlation function
arxiv created 2006/09/08 · arxiv updated 2009/12/01
We analyze the Kondo effect of a magnetic impurity attached to an ultrasmall metallic wire using the density matrix renormalization group. The spatial spin correlation function and the impurity spectral density are computed for system sizes of up to L=511 sites, covering the crossover from L<lK to L>lK, with lK the spin screening length. We establish a proportionality between the weight of the Kondo resonance and lK as a function of L. This suggests a spectroscopic way of detecting the Kondo cloud.