ELFT HÍRADÓ

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

                                     MEGHIVO

                  a BME Fizikai Intezet, Elmeleti Fizika Tanszek
                                  szeminariumara:

                                   Zsolt Bihary
                    Chemistry Department, Northwestern University
                                   Evanston, USA

                             "Molecular electronics -
                    Role of dephasing and electron correlation

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

        Ideje: 2005. aprilis 15. pentek, 10:15.

        Abstract: After a brief summary on the field of molecular
        electronics, I present an introduction to the Non-equilibrium
        Green function (Keldysh) formalism and its current numerical app
        lications for studying quantum transport in molecular systems.
        These techniques are purely quantum-chemical in nature, they do
        not take dephasing effects into account, therefore are incapable
        of describing the transition from the purely elastic tunneling
        regime to the classical, thermally dephased conduction regime.
        Another shortcoming of the existing techniques is that they are of
        the self-consistent Hartree-Fock (mean-field) type; hence they are
        not reliable in situations when electron-electron correlations are
        strong. In my presentation, I propose generalized and alternative
        approaches within the Keldysh formalism to account for dephasing
        and correlation effects.

        Minden erdeklodot szivesen latunk.


                                                        Varga Imre