| Autor: |
Levine, Ariel D., Peskin, Uri |
| Předmět: |
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| Zdroj: |
Molecular Physics; Aug2019, Vol. 117 Issue 15/16, p2097-2107, 11p |
| Abstrakt: |
We highlight a new manifestation of quantum interference in transport through single-molecule junctions, owing to different charge transport pathways from the molecule through the contacts into the three-dimensional electrode. Such contact interference can be identified with characteristic features of the current–voltage curve, as dramatic as closing an otherwise open transport channel. Based on analysis of the necessary conditions for observation of this phenomenon, we conclude that this effect should be detectable in relatively small molecules, where a molecular site shares coupling to two electrodes, and an electrode surface site shares coupling to different molecular sites. The importance of the surface-molecule connectivity scheme implies that commonly used reduced models which couple different molecular sites to effectively independent electrodes, fail to account for this effect and must be corrected in order to properly capture contact interference. [ABSTRACT FROM AUTHOR] |
| Databáze: |
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