Abstract
We present the results of low-energy electron energy loss spectroscopy (EELS) studies of the lower excitonic transitions of Xe thin films on single crystal Ag(111) and Al(111) surfaces. We find that the spectra of cold (≈20 K) deposited, disordered Xe films can be interpreted in terms of broadened atomic-like transitions. However, the spectra of ordered Xe layers. obtained upon annealing, show extra transitions with no optical counterparts. These observations are explained in terms of significant dispersion and lifting of the degeneracy of levels in ordered layers of Xe. Low-energy EELS allows transitions to the split excitonic levels involving large momentum transfer.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
