80 citations · 156 across the 4 of their papers we have counts for
4 papers
Ultrafast dynamics of photocurrents in surface states of 3D topological insulators
Jens Güdde, Ulrich Höfer
This article reviews experimental work on the ultrafast electron dynamics in the topological surface state (TSS) of three-dimensional (3D) topological insulators (TIs) observed wit…
Intervalley scattering in MoS imaged by two-photon photoemission with a high-harmonic probe
Robert Wallauer, Johannes Reimann, Nico Armbrust +2
We report on the direct mapping of electron transfer in the momentum space of bulk MoS by means of time- and angle-resolved two-photon photoemission with a high-harmonic probe.…
Resolubility of Image-Potential Resonances
Ulrich Höfer, Pedro M. Echenique
A theory of image-potential states is presented for the general case where these surface electronic states are resonant with a bulk continuum. The theory extends the multiple scatt…
Energy Shift and Wavefunction Overlap of Metal-Organic Interface-States
M. Marks, N. L. Zaitsev, B. Schmidt +6
The properties of Shockley-type interface states between -conjugated organic molecular layers and metal surfaces are investigated by time-resolved two-photon photoemission exper…