DEPARTMENT OF
PHYSICAL CHEMISTRY
Physikalische Chemie - Direktor: Prof. Dr. Martin Wolf
Special Seminar
Host: R. Ernstorfer

Monday, October 9, 2017, 11:00 am
All are invited to meet around 10:40 am for a chat with coffee & cookies.
PC Seminar Room, G 2.06, Faradayweg 4
Prof. Dr. Markus Gühr
Nanostrukturierung von Oberflächen, metallische Quantendrähte, Experimentelle Quantenphysik, Institut für Physik und Astronomie, Mathematisch-Naturwissenschaftliche Fakultät, Universität Potsdam
Molecular electronic and structural dynamics 
observed through ultrafast soft x-rays and 
relativistic electron scattering
I will present molecular dynamics obtained by diffraction of relativistic electrons exemplified on the rotational and vibrational modes of small model systems [1,2]. I will point out electron-specific advantages in diffraction of small molecules and discuss future applications on larger molecular systems. In addition, I will present site specific electronic probing of molecular dynamics accomplished by soft x-ray pulses at the oxygen K-edge. We used this scheme to unequivocally observe a molecular intersystem crossing from a ππ* state to a nπ* state [3]. Combinations of the two techniques for a more complete dynamical description will be discussed.
[1] J. Yang, et al.,Nature Comm. 7, 11232 (2016)
[2] J. Yang, et al., Phys. Rev. Lett. 115, 173002 (2016)
[3] T. J. A. Wolf et al., Nature Communications 8, 29 (2017)