Title: Playing with Molecular Junctions – Tales from the South.
When: Monday, October 9, (2017), 15:30.
Place: Department of Condensed Matter Physics, Faculty of Sciences, Module 3, Seminar Room (5th Floor).
Speaker: Yonatan Dubi, Ben-Gurion University Department of Chemistry & The Ilze-Katz Institute for Nano-Scale Science and Technology, Israel.
The ultimate goal of molecular electronics is to create technologies that will complement – and eventually supersede – Si-based microelectronics technologies. To reach this goal, the field of single-molecule electronics is aiming at recognizing and characterizing single-molecule devices that mimic at least some of the behaviors of today’s semiconductor components. In this talk I tell the tale of three such single-molecule devices, including the world’s smallest diode and the symmetric photo-switch, all of which are the fruit of collaboration with the experimental group of B.-Q. Xu. I describe both experimental (to the best of my powers) and theoretical sides of these devices, and elucidate the basic physical processes which are dominating these systems.
- J. Zhou, S. Samanta, C. Guo, J. Locklinb and B. -Q. Xu, Measurements of contact specific low-bias negative differential resistance of single metalorganic molecular junctions, Nanoscale 5, 5715 (2013).
- Y. Dubi, Dynamical coupling and negative differential resistance from interactions across the molecule-electrode interface in molecular junctions, J. Chem. Phys. 139, 154710 (2013).
- B.-Q. Xu and Y. Dubi, invited review: Negative Differential Conductance in Molecular Junctions: An Overview of Experiment and Theory, J. Phys. Condensed Matter 27, 263202 (2015).
- C. Guo, K. Wang, E. Zerah-Harush, J. Hamill, B. Wang, Y. Dubi, B. Xu, Molecular rectifier composed of DNA with highrectification ratio enabled by intercalation, Nature Chemistry, doi:10.1038/nchem.2480 (AOP, 2016).