Berlin 2012 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 68: Focussed session: Functional molecules at surfaces III

O 68.1: Topical Talk

Donnerstag, 29. März 2012, 10:30–11:00, A 053

Frontier Nanoscience: Molecular Superconductors to Molecular Machines — •SAW WAI Hla — Center for Nanoscale Materials, Argonne National Laboratory, IL 60439, and Department of Physics and Astronomy, Ohio University, Athens, OH 45701, USA.

We combine a variety of scanning tunneling microscope (STM) manipulation schemes with tunneling spectroscopy techniques to image and manipulate properties of molecules on surfaces. This talk will include our recent results and achievements: In molecular spintronics area, orbital Kondo effect of single molecules generated by an interfacial charge transfer process will be discussed. In nanoscale superconductivity area, we will present the smallest molecular superconductor ever studied to date. Here, the finding of superconductivity in just four pairs of (BETS)2-GaCl4 molecules opens the possibility of investigating superconducting phenomena locally. Finally, in molecular nanomachine area, complex rotation mechanisms of Ru based multi-component molecular rotors operated by injecting tunneling electrons from an STM tip will be presented. These experiments are innovative, and are tailored to address several critical issues covering both for fundamental understanding, and for demonstration of novel molecule based nanodevices on materials surfaces.