Theory of Inelastic Scattering from Magnetic Impurities

Gergely Zaránd, László Borda, Jan von Delft, and Natan Andrei
Phys. Rev. Lett. 93, 107204 – Published 3 September 2004

Abstract

We use the numerical renormalization group method to calculate the single-particle matrix elements T of the many-body T matrix of the conduction electrons scattered by a magnetic impurity at T=0 temperature. Since T determines both the total and the elastic, spin-diagonal scattering cross sections, we are able to compute the full energy, spin, and magnetic field dependence of the inelastic scattering cross section σinel(ω). We find an almost linear frequency dependence of σinel(ω) below the Kondo temperature TK, which crosses over to a ω2 behavior only at extremely low energies. Our method can be generalized to other quantum impurity models.

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  • Received 2 April 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.107204

©2004 American Physical Society

Authors & Affiliations

Gergely Zaránd1, László Borda2, Jan von Delft2, and Natan Andrei3

  • 1Theoretical Physics Department, Budapest University of Technology and Economics, Budafoki út 8, H-1521 Hungary
  • 2Sektion Physik and Center for Nanoscience, LMU München, Theresienstrasse 37, 80333 München, Germany
  • 3Center for Materials Theory, Rutgers University, Piscataway, New Jersey 08855, USA

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Issue

Vol. 93, Iss. 10 — 3 September 2004

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