CeNS Colloquium
Place: Kleiner Physik-Hörsaal, Geschwister-Scholl-Platz
Date: 06.05.11, Time: 15:30 h
Cooperative molecular field effect - from sensors to spintronics
Prof. Ron Naaman
Department of Chemical Physics, Weizmann Institute of Science, Rehovot/Israel
New electronic and magnetic properties are induced by the adsorption of closed packed organized organic monolayers on solid substrates.1 In layers made from chiral molecules, unexpectedly large electronic dichroism is observed, which manifests itself as spin specific electron transmission.2 For many thiolated molecules self-assembled on gold, a surprisingly large paramagnetism is observed.3
The adsorbed layers may also affect the electronic properties of the underlying substrate and change its conduction and magnetic behavior.
These effects and their origin and their applications will be discussed.
1 D. Cahen, R. Naaman, Z. Vager, Adv. Funct. Mat., 15, 1571 (2005).
2 I. Carmeli, V. Skakalova, R. Naaman, Z. Vager, Angewandte Chem. Int. Edition, 41, 761 (2002).
3 I. Carmeli, G. Leitus, R. Naaman, S. Reich, Z. Vager, J. Chem. Phys., 118, 10372 (2003).