TY  - JOUR
AU  - Wenthaus, Lukas
AU  - Kabachnik, Nikolay
AU  - Borgwardt, Mario
AU  - Palutke, Steffen
AU  - Kutnyakhov, Dmytro
AU  - Pressacco, Federico
AU  - Scholz, Markus
AU  - Potorochin, Dmitrii
AU  - Wind, Nils
AU  - Duesterer, Stefan
AU  - Brenner, Guenter
AU  - Gessner, Oliver
AU  - Molodtsov, Serguei
AU  - Eberhardt, Wolfgang
AU  - Roth, Friedrich
TI  - New insights into the laser-assisted photoelectric effect from solid-state surfaces
JO  - Physical review / B
VL  - 110
IS  - 23
SN  - 2469-9950
PB  - Inst.
M1  - PUBDB-2023-06883
M1  - arXiv:2309.00099
SP  - 235406
PY  - 2024
N1  - 18 pages, 3 figures
AB  - Photoemission from a solid surface provides a wealth of information about its electronic structure and dynamic evolution. Ultrafast pump-probe experiments offer real-time access to photon-surface interactions and the resulting electron dynamics. Here, we present a femtosecond time-resolved photoelectron spectroscopy study of laser-assisted photoemission (LAPE) from two different metal surfaces, tungsten and platinum. Utilizing synchronized IR laser and x-ray pulses, photoelectron sideband generation up to the sixth order is observed. A significant material-dependent variation of the LAPE response has not been predicted by previous theoretical models, to the best of our knowledge. The observed phenomena are semiquantitatively reproduced by considering distinct dynamic dielectric responses of the two materials. These findings provide a deeper understanding of the LAPE process and insights into the dynamic interplay between optical laser fields and metal surfaces.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001375662700003
DO  - DOI:10.1103/PhysRevB.110.235406
UR  - https://bib-pubdb1.desy.de/record/598564
ER  -