Heidelberg 2015 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 20: Theory: Molecular Dynamics

MO 20.1: Hauptvortrag

Donnerstag, 26. März 2015, 14:30–15:00, PH/SR106

Controlling charge migration in molecules — •Alexander I. Kuleff — Theoretische Chemie, PCI, Universität Heidelberg

Exposing molecules to ultrashort laser pulses can trigger pure electron dynamics in the excited or ionized system. In the case of ionization, these dynamics may manifest as an ultrafast migration of the initially created hole-charge throughout the ionized molecule and were termed charge migration [1]. Charge migration is solely driven by electron correlation and appeared to be a rich phenomenon with many facets that are rather characteristic of the molecule studied [2]. All this increasingly attracts the attention of the scientific community from both theoretical and experimental sides. Due to the coupling between the electronic and the nuclear motion, the control over the pure electron dynamics offers the extremely interesting possibility to steer the succeeding chemical reactivity by predetermining the reaction outcome at a very early stage. A way to control the charge migration by appropriately tailored [3] femtosecond laser pulses will be presented and the consequences of the application of such a scheme will be discussed.

[1] L. S. Cederbaum and J. Zobeley, Chem. Phys. Lett. 307, 205 (1999).

[2] A. I. Kuleff and L. S. Cederbaum, J. Phys. B 47, 124002 (2014).

[3] N. V. Golubev and A. I. Kuleff, Phys. Rev. A 90, 035401 (2014).