Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-04-15
Physics
Condensed Matter
Strongly Correlated Electrons
Scientific paper
We studied the resonant diffraction signal from stepped surfaces of SrTiO3 at the Ti 2p -> 3d (L2,3) resonance in comparison with x-ray absorption (XAS) and specular reflectivity data. The steps on the surface form an artificial superstructure suited as a model system for resonant soft x-ray diffraction. A small step density on the surface is sufficient to produce a well defined diffraction peak, showing the high sensitivity of the method. At larger incidence angles, the resonant diffraction spectrum from the steps on the surface resembles the spectrum for specular reflectivity. Both deviate from the XAS data in the relative peak intensities and positions of the peak maxima. We determined the optical parameters of the sample across the resonance and found that the differences between the XAS and scattering spectra reflect the different quantities probed in the different signals. When recorded at low incidence or detection angles, XAS and specular reflectivity spectra are distorted by the changes of the angle of total reflection with energy. Also the step peak spectra, though less affected, show an energy shift of the peak maxima in grazing incidence geometry.
Blank Dave H. A.
Chang Chi-Fon
Hu Zeng-Zhen
Huijben Mark
Kaindl Gunter
No associations
LandOfFree
Resonant soft x-ray scattering from stepped surfaces of SrTiO3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Resonant soft x-ray scattering from stepped surfaces of SrTiO3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resonant soft x-ray scattering from stepped surfaces of SrTiO3 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-654178