Professor Ora Entin-Wohlman (Dept. of Physics, Ben Gurion U., Israel, Fellow of the American )

Charge transport through vibrating junctions

Abstract:
Single-molecule junctions based on direct bonding of a small molecule between two metallic electrodes seem by now well-established experimentally. The electronic transport through such a molecular bridge is attracting a great deal of interest, including the invention of ingenious experimental realizations for it. Besides the possible technological advantages of \molecular electronics", there are many issues that make this problem of great interest from both the basic science and the application points of view. It thus seems that there are several relevant issues in the theory of transport through a vibrating junction which are either still under debate or are not entirely clear. These concern the dependence of the conductance on the junction transparency, the structure of the di_erential conductance near the opening of the inelastic channel, and the precise e_ect of the Franck-Condon factors on the resonances. We give certain answers to these questions and provide further physical interpretations for them.
 
2009 年 4 月 16 日
15:35~16:35

Rm. 312, CCMS & New Physics Building