ELFT HÍRADÓ

[Tamas Geszti <geszti AT complex.elte.hu>]

                                MEGHÍVÓ

az ELTE Komplex Rendszerek Fizikája Tanszék teájára:

                              BIHARY ZSOLT
                (Chemistry Department, Northwestern University
                             Evanston, USA):

   Molecular electronics - Role of dephasing and electron correlation

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 applications 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.


Az elõadás ideje: április 5-én, kedden kettõkor
           helye: Pázmány Péter sétány 1/A (északi épület)
                  5.55-ös terem.

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