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

                     "Kondo screening cloud in a one-dimensional wire"
 
        Abstract: We study the Kondo model - a magnetic impurity coupled to a 
one 
        dimensional wire via exchange coupling - by using Wilson's numerical 
        renormalization group (NRG) technique. By applying an approach 
similar to 
        which was used to compute the two impurity problem we managed to 
improve 
        the bad spatial resolution of the numerical renormalization group 
method. 
        In this way we have calculated the impurity spin - conduction 
electron 
        spin correlation function which is a measure of the Kondo 
compensation 
        cloud whose existence has been a long standing problem in solid state 
        physics. We also present results on the temperature dependence of the 
        Kondo correlations.

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

        Ideje: 2007. februar 9. pentek, 10:15.



        Minden erdeklodot szivesen latunk.


                                                                              
          
                                                                              
  Varga Imre