Local Ionization Dynamics Traced by Photoassisted Scanning Tunneling Microscopy: A Theoretical Approach.
For tracing the spatiotemporal evolution of electronic systems, we suggest and analyze theoretically a setup that exploits the excellent spatial resolution based on scanning tunneling microscopy techniques combined with the temporal resolution of femtosecond pump-probe photoelectron spectroscopy. As an example, we consider the laser-induced, local vibrational dynamics of a surface-adsorbed molecule. The photoelectrons released by a laser pulse can be collected by the scanning tip and utilized to access the spatiotemporal dynamics. Our proof-of-principle calculations are based on the solution of the time-dependent Schrödinger equation supported by the ab initio computation of the matrix elements determining the dynamics.
Institute for Physics, Martin-Luther University Halle-Wittenberg, Heinrich-Damerow-Straße 4, 06120 Halle.
Michael
M
Schüler
Institute for Physics, Martin-Luther University Halle-Wittenberg, Heinrich-Damerow-Straße 4, 06120 Halle.
Yaroslav
Y
Pavlyukh
Institute for Physics, Martin-Luther University Halle-Wittenberg, Heinrich-Damerow-Straße 4, 06120 Halle.
Jamal
J
Berakdar
Dyson orbital; orbital imaging; photoassisted STM; surface photochemistry; surface vibrations; time-resolved photoemission