Figure 5
Reflectivity curves recorded at 17° grazing X-ray incidence. The curves are normalized with respect to the signal of the I0 monitor. They are normalized to unity at the pre-edge region. A nonlinear increase of the reflected signal linked to a change in structure between 0.7 and 1.7 ML is observed. The 1.7 ML data were recollected at a temperature of 96 K. The 0.7 ML showed no dichroism at this temperature. |