41 citations · 56 across the 13 of their papers we have counts for
8 papers · 1 filter
Electron phonon coupling in ultrathin Pb films on Si(111): Where the heck is the energy?
M. Tajik, T. Witte, Ch. Brand +4
In this work, we study the heat transfer from electron to phonon system within a five monolayer thin epitaxial Pb film on Si(111) upon fs-laser excitation. The response of the elec…
Ultrafast Electron Diffraction at Surfaces:From Nanoscale Heat Transport to Driven Phase Transitions
Michael Horn von Hoegen
Many fundamental processes of structural changes at surfaces occur on a pico- or femtosecond time scale. In order to study such ultra-fast processes, we have combined modern surfac…
Cool Cooling Collar for Bake-Out of Temperature-Sensitive Devices
Jonas D. Fortmann, Christian Brand, Michael Horn-von Hoegen
A combination of a pumpable gate valve and a self-built cooling collar permits bake-out of an ultra-high vacuum chamber without having to dismount sensitive equipment. A small pump…
Disentangling the Electronic and Lattice Contributions to the Dielectric Response of Photoexcited Bismuth
Fabian Thiemann, Germán Sciaini, Alexander Kassen +2
Elucidating the interplay between nuclear and electronic degrees of freedom that govern the complex dielectric behavior of materials under intense photoexcitation is essential for…
A modular table-top setup for ultrafast X-ray diffraction
Wei Lu, Matthieu Nicoul, Uladzimir Shymanovich +4
We present a table-top setup for femtosecond time-resolved X-ray diffraction based on a Cu Kα (8.05 keV) laser driven plasma X-ray source. Due to its modular design it provides hig…
Kibble-Zurek dynamics in the anisotropic Ising model of the Si(001) surface
Gernot Schaller, Friedemann Queisser, Seyedeh Parya Katoorani +8
As a simplified description of the non-equilibrium dynamics of buckled dimers on the Si(001) surface, we consider the anisotropic 2D Ising model and study the freezing of spatial c…