Quick Search:

uzh logo
Browse by:

Zurich Open Repository and Archive

Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-50441

Leuenberger, D; Yanagisawa, H; Roth, S; Osterwalder, J; Hengsberger, M (2011). Disentanglement of electron dynamics and space-charge effects in time-resolved photoemission from h-BN/Ni(111). Physical Review B, 84(12):125107.

[img]Published Version
PDF - Registered users only
View at publisher


We observe time-resolved and polarization dependent two-, three-, and four-photon transitions from a Ni(111) surface covered with a monolayer of hexagonal boron nitride. The spectra show features due to transitions involving two unoccupied intermediate states: the n=1 image potential state of Ni(111) and a boron nitride-related interface state. We use these transitions in order to track the effects of space-charge on the spectra in view of pump-probe experiments, at high excitations densities. A simple model is presented, which reproduces the measured energy shifts and broadenings in great detail, allowing the ultrafast dynamics and the space-charge effects to be disentangled. Moreover, owing to the high excitation densities an additional particular three-photon transition via both the interface state and a virtual intermediate state could be measured and identified. The polarization-dependent transient of this transition has successfully been simulated, allowing the lifetime of the involved intermediate state to be extracted from the data.


12 citations in Web of Science®
7 citations in Scopus®
Google Scholar™



1 download since deposited on 31 Oct 2011
0 downloads since 12 months

Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Deposited On:31 Oct 2011 14:01
Last Modified:05 Apr 2016 15:04
Publisher:American Physical Society
Publisher DOI:10.1103/PhysRevB.84.125107

Users (please log in): suggest update or correction for this item

Repository Staff Only: item control page