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2006 NSTI Nano Industrial Impact Workshop
May 7, 5.00-8.00 pm
Hynes Convention Center
Boston, Massachusetts, USA

 

 Mark RATNER -Professor of Chemistry, Northwestern Chemistry Department

Molecular Transport Structures: Elastic Scattering and Beyond

Mark A. Ratner, Abe Nitzan,* Alessandro Troisi** and Misha Galperin

Chemistry Dept. and Center for Nanotechnology, Northwestern University

*Chemistry Dept., Tel-Aviv University

** University of Warwick

Current experimental efforts are clarifying quite beautifully the nature of charge transport in so-called molecular junctions, in which a single molecule provides the channel for current flow between two electrodes. The theoretical modeling of such structures is challenging, because of the uncertainty of geometry, the nonequilibrium nature of the process, and the variety of available mechanisms. The talk will center on the first formulation of the problem in terms of scattering theory, and then on the generalizations needed to make that simple picture relevant to the real experimental situation. These include vibronic coupling, structural disorder and energy transfer. Applications include differential negative resistance, hysteresis, IETS spectra in transport junctions and different coupling regimes.


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