Soft X-ray induced excited spin state trapping and soft X-ray photochemistry at the iron L2,3 edge in [Fe(phen)2(NCS)2] and [Fe(phen)2(NCSe)2] (phen = 1,10-phenanthroline) ‡

Robust spin crossover and memristance across a single molecule

“…2a display the XAS spectra of the HS state and the LS state measured at 200 K and 100 K, respectively. Clear differences exist between the spectra, such as a dominant peak located at ≈706 eV for the HS state and at ≈708 eV for the LS state of the Fe 2p L 3 absorption edge, in good agreement with previous studies 19 . The bottom of Fig.…”

“…2e). Note that some of the LS state molecules are switched to the HS state owing to the soft X-ray-induced excited spin state trapping 19 , which can be seen in the XAS spectra. A spectrum change of XAS with respect to circular right-and left-polarized X-ray was observed only near the peak at ≈706 eV and no change was observed at ≈708 eV.…”

A close look at dose: Toward L-edge XAS spectral uniformity, dose quantification and prediction of metal ion photoreduction

“…Spectra were measured at room temperature. We further assumed X-ray incidence along the surface normal, a beam spot size of 750,000 m 2 and a flux of 1 × 10 11 ph/s as based on previous work of the same group at the same machine [66]. We further assumed equal spectral point distribution over the spectra, as well as that the shown 702-731 eV is the full energy range.…”

“…We further assumed equal spectral point distribution over the spectra, as well as that the shown 702-731 eV is the full energy range. We also assume that the chosen spot on the sample was only exposed to X-rays during acquisition of these spectra and that the pressure was ≥2 × 10 −8 mbar [66].…”

“…Detailed early work by Collison and Young [66][67][68][69] exists on molecular compounds studied at their V, Fe or Ni L-edges, after which a period of silence on the topic followed. Recently, however, awareness of this issue has increased, as is illustrated by Mn and Fe L-edge studies, mainly on single molecule magnets, in which radiation-induced chemistry is explicitly acknowledged to occur [33,[70][71][72][73][74][75][76].…”