2004/03/31 by Gergely Zaránd, G. Zarand, L. Borda +2 · 9 citations
Engineering · Physics and Astronomy · #Magnetic properties of thin films #Magneto-Optical Properties and Applications #Quantum and electron transport phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.93.107204
published as Phys. Rev. Lett. 93, 107204 (2004) · 4 pages
arxiv created 2004/03/31 · openalex publication_date 2004/09/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 \ensuremathσinel(\ensuremathω). We find an almost linear frequency dependence of \ensuremathσinel(\ensuremathω) below the Kondo temperature TK, which crosses over to a \ensuremathω2 behavior only at extremely low energies. Our method can be generalized to other quantum impurity models.