Inelastic scattering from quantum impurities

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1 Citation (Scopus)

Abstract

We review the non-perturbative theoretical framework set up recently to compute the inelastic scattering cross section from quantum impurities [G. Zaránd, L. Borda, J. von Delft and N. Andrei, Phys. Rev. Lett. 93 (2004) 107204] and show how it can be applied to a number of quantum impurity models. We first use this method for the S = frac(1, 2) single-channel Kondo model and the Anderson model. In both cases, a large plateau is found in the inelastic scattering rate for incoming energies above TK, and a quasilinear regime appears in the energy range 0.05 TK < ω < 0.5 TK, in agreement with the experimental observations. We also present results for the 2-channel Kondo model, the prototype of all non-Fermi liquid models, and show that there half of the scattering remains inelastic even at the Fermi energy.

Original languageEnglish
Pages (from-to)5-11
Number of pages7
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume40
Issue number1
DOIs
Publication statusPublished - Oct 1 2007

Keywords

  • Dephasing
  • Inelastic scattering
  • Kondo effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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