1 / 29

Resonant and Non-resonant Phenomena in RIXS

Resonant and Non-resonant Phenomena in RIXS. Spectroscopic aspects of RIXS Resonant and non-resonant Integrated 2p3d RIXS (FY detection) Removing the obscuring silent majority. resonant inelastic x-ray scattering/spectroscopy. 2p XAS: 2p3d integrals & 2p spin-orbit coupling. 3d.

gunnar
Download Presentation

Resonant and Non-resonant Phenomena in RIXS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Resonant and Non-resonant Phenomena in RIXS • Spectroscopic aspects of RIXS • Resonant and non-resonant • Integrated 2p3d RIXS (FY detection) • Removing the obscuring silent majority

  2. resonant inelastic x-ray scattering/spectroscopy

  3. 2p XAS: 2p3d integrals & 2p spin-orbit coupling 3d <2p3d|1/r|2p3d> 2p3/2 2p1/2 Phys. Rev. B. 42, 5459 (1990)

  4. CTM4XAS (semi-empirical)

  5. 2p3s RIXS of CaF2 3d0 → 2p5 3d1 → 3s1 3d1 Rubensson et al. Phys. Rev. B. 49, 1507 (1994); Phys. Rev. B. 53, 7099 (1996)

  6. 2p3s RIXS of CaF2 Is interference important? If not RIXS = XAS * XES Rubensson et al. Phys. Rev. B. 49, 1507 (1994); Phys. Rev. B. 53, 7099 (1996)

  7. 2p3s RIXS of CaF2 Is interference important? If not RIXS = XAS * XES Rubensson et al. Phys. Rev. B. 49, 1507 (1994); Phys. Rev. B. 53, 7099 (1996)

  8. La 4d5p RIXS: importance of interference 4f0 4d9 4f1[3D1]  5p1 4f1 Phys. Rev. Lett. 103, 137401 (2009)

  9. La 4d5p RIXS: importance of interference 4f0 4d9 4f1[3D1]  5p1 4f1 Resonant XES spectra change within a single resonance Phys. Rev. Lett. 103, 137401 (2009)

  10. La 4d5p RIXS: importance of interference 3D1 pre-edge interferes with tail of delayed onset at 17 eV Phys. Rev. Lett. 103, 137401 (2009)

  11. 2p3s RIXS of CaF2 3d0 → 2p5 3d1 → 3s1 3d1 Rubensson et al. Phys. Rev. B. 49, 1507 (1994); Phys. Rev. B. 53, 7099 (1996)

  12. Resonant and non-resonant XAS * XES XPS * XES Phys. Rev. B. 53, 7099 (1996)

  13. Resonant and non-resonant XPS * XES Glatzel et al., Phys. Rev. B. 64, 045109 (2001)

  14. Resonant and non-resonant XAS * XES XPS * XES Phys. Rev. B. 53, 7099 (1996)

  15. ‘non-resonant peak’ only visible at resonance Ground state: 3d8 + 3d9 + 3d10 XAS main: 3d9 XAS CT: 3d10 XPS: <1% 3d10 Finazzi et al. PRB 59, 9933 (1999)

  16. 2p3d RIXS of NiO S MS dd ‘spin-flip’ spin-flip Phys. Rev. B. 57, 14584 (1998)

  17. 2p3d RIXS XES of CoO Van Schooneveld et al. J. Phys. Chem. C. 116, 15218 (2012)

  18. CTM4RIXS (semi-empirical) (crystal fields, exchange field, spin-orbit, [charge transfer]) CTM4RIXS by P. Glatzel, E. Stavitski et al.

  19. Fluorescence Yield = integrated 2p3d RIXS • FY-XAS ≠ XAS • L2 edge increases & High-energies increase • Sum rules break down • Strong polarization dependence Kurian J. Phys. Cond. Matt. 24, 435602 (2012)

  20. Dips and peaks in FY-XAS Nature Chem. 4, 766 (2012)

  21. Problem: XAS measures average of all atoms

  22. Nanoscale chemical imaging of a working catalyst Carbon K-edge 1 bar, 350 C de Smit et al. Nature 456, 222 (2008); Angew. Chem. 48, 3632 (2009)

  23. Problem: XAS measures average of all atoms • 2p XAS under in-situ conditions • Measure different valences in one spectrum • GOAL: measure spectra for each valence separate

  24. Valence selective XAS Glatzel et al. Inorg. Chem. 41, 3121 (2002)

  25. Removing the silent majority 2p XAS of Co2+ and Co3+

  26. Removing the silent majority 2p XAS of Co2+ and Co3+

  27. Removing the silent majority 2p RIXS of Co2+ and Co3+

  28. Removing the silent majority 2p RIXS of Co2+ and Co3+

  29. Acknowledgements Utrecht University:Matti van Schooneveld (Mülheim) Reshmi Kurian Piter Miedema (Bessy) Emiel de Smit (Exxon) Fernando Morales (Topsoe) Eli Stavitski (CLS) Thorsten Schmidt (SLS) Pieter Glatzel (ESRF)

More Related