ELFT HÍRADÓ

[Varga Imre <varga AT neumann.phy.bme.hu>]

                                     MEGHIVO

                  a BME Fizikai Intezet, Elmeleti Fizika Tanszek
                                  szeminariumara:


                                   Borda Laszlo
                           BME, Elmeleti Fizika Tanszek

            "Theory of inelastic scattering from magnetic impurities"


        Helye: BME Fizikai Intezet,
               Elmeleti Fizika Tanszek
               Budafoki ut 8.
               F-epulet, III. lepcsohaz, magasfoldszint
               szeminariumi szoba

        Ideje: 2004. oktober 29. pentek, 10:15.

        Kivonat: We use the numerical renormalization group method
        tocalculate the single particle matrix elements $\cal T$ of the
        many body $T$-matrix of the conduction electrons scattered by a
        magnetic impurity at T=0 temperature. Since $\cal T$ 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, $\sigma_{\rm inel}(\omega)$. We find an almost linear
        frequency dependence of $\sigma_{\rm inel}(\omega)$ below the
        Kondo temperature, $T_K$, which crosses over to a $\sim \omega^2$
        behavior only at extremely low energies. Our method can be
        generalized to other quantum impurity models.


        Minden erdeklodot szivesen latunk.


                                                        Varga Imre