Spectral densities of Kondo impurities in nanoscopic systems

2002/08/28 by Pablo S. Cornaglia, P. S. Cornaglia, C. A. Balseiro · 3 citations
Engineering · Physics and Astronomy · #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #Semiconductor materials and devices #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.66.174404

published as Phys. Rev. B 66, 174404 (2002) · 8 pages, 9 figures

arxiv created 2002/08/28 · openalex publication_date 2002/11/04 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present results for the spectral properties of Kondo impurities in nanoscopic systems. Using Wilson's renormalization group we analyze the frequency and temperature dependence of the impurity spectral density \ensuremathρ_i(\ensuremathω,T) for impurities in small systems that are either isolated or in contact with a reservoir. We have performed a detailed analysis of the structure of \ensuremathρ_i(\ensuremathω,T) for \ensuremathω around the Fermi energy for different Fermi energies relative to the intrinsic structure of the local density of states. We show how the electron confinement energy scales introduce features in the frequency and temperature dependence of the impurity spectral properties.

Citations

• Carbon Nanotubes as Molecular Quantum Wires
• The renormalization group: Critical phenomena and the Kondo problem
• Kondo impurities in nanoscopic systems: Confinement-induced regimes

Cited by

• Universal Distribution of Kondo Temperatures in Dirty Metals
• Kondo screening cloud effects in mesoscopic devices
• Kondo screening cloud in a one-dimensional wire: Numerical renormalization group study

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