MCW07 Modeling Charging-based Switching in Molecular Transport Junctions

By Sina Yeganeh, (unknown), Mark Ratner

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We will discuss several proposed explanations for the switching and negative differential resistance behavior seen in some molecular junctions. It is shown that a proposed polaron model is successful in predicting both hysteresis and NDR behavior, and the model is elaborated with image charge effects and parameters from electronic structure calculations. This model includes the effects of conformational change, charging, and image charge stabilization.


Sina Yeganeh is a graduate student working with Professor Mark Ratner at Northwestern University's Center for Nanofabrication and Molecular Self-Assembly. He received his B.S. in Chemistry from the California Institute of Technology in 2004. His research at Northwestern is supported by a National Defense Science and Engineering fellowship and is focused on the dynamics of charge transport in molecular junctions.


M. Galperin, M. A. Ratner, A. Nitzan, Nano Lett. 2005, 5, 125.

S. Yeganeh, M. Galperin, M. A. Ratner, J. Am. Chem. Soc. 2007, 129, 13313.

Cite this work

Researchers should cite this work as follows:

  • Sina Yeganeh; ; Mark Ratner (2007), "MCW07 Modeling Charging-based Switching in Molecular Transport Junctions,"

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Burton Morgan Building, Purdue University, West Lafayette, IN


  1. ab initio
  2. computational chemistry
  3. molecular electronics
  4. research seminar
  5. nanoelectronics
  6. NEGF
  7. nanowires
  8. quantum transport
  9. devices
  10. nanoelectronics
  11. ab initio
  12. computational chemistry
  13. molecular electronics
  14. research seminar
  15. NEGF
  16. nanowires
  17. quantum transport
  18. devices