研究・研究者
研究会・セミナー
| 演 題 | 「Surface Femtochemistry: From Desorbing Atoms to Rotating Molecular Machines」 |
|---|---|
| 日 時 | 2012年03月05日(月) 17:00 |
| 講演者 | Professor Hrvoje Petek, Department of Physics and Astronomy, University of Pittsburgh |
| 場 所 | 研究棟201セミナー室 |
| 概 要 |
We describe the imaging surface adsorbate electronic structure and its dynamical changes in surface femtochemistry for atomic and atom-like adsorbates on noble metal surfaces.1 Specifically, we use time-resolved two-photon photoemission momentum imaging to measure snapshots of angle resolved photoemission spectra for alkali atoms in the process of photodesorption from Cu and Ag surfaces. We also describe the atom-like superatom states of hollow molecules, with the specific example of C60 and endohedral fullerenes with metal atom inclusions.2-4 We discuss the case of Li@C60, for which the charge-transfer excitation of the superatom state triggers internal femtochemistry, as a prototype for a single molecule machine. And finally, we demonstrate the actuation of a single molecule machine between three pairs of enantiomeric states by inelastic tunneling of electrons from an STM tip.5 |
| お問合せ先 | 大峯 巖 |
