Magyar Tudományos Akadémia
SZILÁRDTESTFIZIKAI ÉS OPTIKAI KUTATÓINTÉZET
1121
Budapest, Konkoly Thege út 29-33,  tel: 392-2212

 

 

SZFKI SZEMINÁRIUM

 

Bihary Zsolt

 

(Chemistry Department, Northwestern University)


Molecular electronics - Role of dephasing

and electron correlation

 

 

 

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.

 

 

2005. április 12. (kedd) de. 10:00

I. épület Tanácsterem

 

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