Prof. Ron Naaman , Dept. of Chemical and Biological Physics, Weizmann Institute, Rehovot, Israel
Chiral Material and the Electrons’ Spin - A Miraculous Match
, 15:00 - 17:00
HEM 219 and online (hybrid)
Spin based properties, applications, and devices are commonly related to magnetic effects and to magnetic materials. However, we found that chiral molecules, crystals, and films act as spin filters for photoelectrons transmission, in electron transfer, and in electron transport.
The new effect, termed Chiral Induced Spin Selectivity (CISS),(1) was found, among others, in bio-molecules and in bio-systems as well as in chiral oxides and in chiral perovskites. It has interesting implications for the production of new types of spintronics devices, (2) in controlling magnetization,(3) and on electron transfer and conduction. It also enables the introduction of new type of catalysts, especially for oxygen related processes. We also found that charge polarization in chiral molecules is accompanied by spin polarization. This finding shed new light on spin dependent interaction between chiral molecules and between them and magnetic surfaces.(4)
1. R. Naaman, Y. Paltiel, D,H, Waldeck, J. Phys. Chem. Lett., 11 (2020) 3660.
2. K. Michaeli, V. Varade, R. Naaman, D. A Waldeck, J. of Physics: Condensed Matter. 29 (2017) 103002.
3. E. Z. B. Smolinsky et al. J. Phys. Chem. Lett. 10 (2019) 1139.
4. K. Banerjee-Ghosh, et al., Science 360 (2018) 1331.
Born in Israel, Prof. Ron Naaman earned his BSc in 1973 from Ben-Gurion University of the Negev, and his PhD in 1978 from the Weizmann Institute of Science. He worked as a postdoctoral researcher at Standord University in California, and spent a year in the Department of Chemistry at Harvard University. In 1981, Prof. Naaman joined the Weizmann Institute in the Department of Isotope Research (later renamed the Department of Chemical Physics). From 1989-1995, Prof. Naaman chaired the Institute’s Chemical Services Unit and from 1995-2000, he headed the Department of Chemical Physics. From 2008-2010, Prof. Naaman was the Chair of the Scientific Council at the Institute. Prof. Naaman heads the Nancy and Stephen Grand Research Center for Sensors and Security, and is the incumbent of the Aryeh and Mintzi Katzman Professorial Chair.
The talk will be offered on campus as well as online (hybrid):
Room: HEM 219
- IMPORTANT: restricted access – registration mandatory until 20 January, 9:00am by email to firstname.lastname@example.org
- Hygiene concept: Hybrid /2G applies
Meeting-ID: 816 8227 3435