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Nuclear coupling and polarization in molecular transport junctions : beyond tunneling to function
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Galperin, M., Ratner, Mark A., Nitzan, Abraham and Troisi, Alessandro (2008) Nuclear coupling and polarization in molecular transport junctions : beyond tunneling to function. Science, Vol.319 (No.5866). pp. 1056-1060. doi:10.1126/science.1146556
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Official URL: http://dx.doi.org/10.1126/science.1146556
Abstract
Much current experimental research on transport in molecular junctions focuses on finite voltages, where substantial polarization- induced nonlinearities may result in technologically relevant device- type responses. Because molecules have strong polarization responses to changing charge state or external field, molecules isolated between electrodes can show strongly nonlinear current- voltage responses. For small applied voltages ( up to similar to 0.3 volt), weak interaction between transporting electrons and molecular vibrations provides the basis for inelastic electron tunneling spectroscopy. At higher voltages and for certain time scale regimes, strong coupling effects occur, including Coulomb blockade, negative differential resistance, dynamical switching and switching noise, current hysteresis, heating, and chemical reactions. We discuss a general picture for such phenomena that arise from charging, strong correlation, and polarization ( electronic and vibrational) effects in the molecule and at the interface.
| Item Type: | Journal Item | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science > Chemistry Faculty of Science > Centre for Scientific Computing |
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| Library of Congress Subject Headings (LCSH): | Polarization (Electricity), Tunneling (Physics), Charge transfer, Molecular electronics, Collisions (Nuclear physics) | ||||
| Journal or Publication Title: | Science | ||||
| Publisher: | American Association for the Advancement of Science | ||||
| ISSN: | 0036-8075 | ||||
| Official Date: | 22 February 2008 | ||||
| Dates: |
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| Volume: | Vol.319 | ||||
| Number: | No.5866 | ||||
| Number of Pages: | 5 | ||||
| Page Range: | pp. 1056-1060 | ||||
| DOI: | 10.1126/science.1146556 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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