skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Observation And Resonant X-Ray Optical Interpretation of Multi-Atom Resonant Photoemission Effects in O 1s Emission From NiO

Abstract

No abstract prepared.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
897448
Report Number(s):
SLAC-REPRINT-2006-177
TRN: US200705%%247
DOE Contract Number:
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys.Rev.B74:165106,2006
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PHOTOEMISSION; OXYGEN; NICKEL OXIDES; Other,OTHER

Citation Formats

Mannella, N., Yang, S.H., Mun, B.S., de Abajo, F.J.G., Kay, A.W., Sell, B.C., Watanabe, M., Ohldag, H., Arenholz, E., Young, A.T., Hussain, Z., Van Hove, M.A., Fadley, C.S., and /UC, Davis /LBL, Berkeley /LBNL, ALS /JAERI-RIKEN, Hyogo /SLAC, SSRL. Observation And Resonant X-Ray Optical Interpretation of Multi-Atom Resonant Photoemission Effects in O 1s Emission From NiO. United States: N. p., 2007. Web.
Mannella, N., Yang, S.H., Mun, B.S., de Abajo, F.J.G., Kay, A.W., Sell, B.C., Watanabe, M., Ohldag, H., Arenholz, E., Young, A.T., Hussain, Z., Van Hove, M.A., Fadley, C.S., & /UC, Davis /LBL, Berkeley /LBNL, ALS /JAERI-RIKEN, Hyogo /SLAC, SSRL. Observation And Resonant X-Ray Optical Interpretation of Multi-Atom Resonant Photoemission Effects in O 1s Emission From NiO. United States.
Mannella, N., Yang, S.H., Mun, B.S., de Abajo, F.J.G., Kay, A.W., Sell, B.C., Watanabe, M., Ohldag, H., Arenholz, E., Young, A.T., Hussain, Z., Van Hove, M.A., Fadley, C.S., and /UC, Davis /LBL, Berkeley /LBNL, ALS /JAERI-RIKEN, Hyogo /SLAC, SSRL. Fri . "Observation And Resonant X-Ray Optical Interpretation of Multi-Atom Resonant Photoemission Effects in O 1s Emission From NiO". United States. doi:.
@article{osti_897448,
title = {Observation And Resonant X-Ray Optical Interpretation of Multi-Atom Resonant Photoemission Effects in O 1s Emission From NiO},
author = {Mannella, N. and Yang, S.H. and Mun, B.S. and de Abajo, F.J.G. and Kay, A.W. and Sell, B.C. and Watanabe, M. and Ohldag, H. and Arenholz, E. and Young, A.T. and Hussain, Z. and Van Hove, M.A. and Fadley, C.S. and /UC, Davis /LBL, Berkeley /LBNL, ALS /JAERI-RIKEN, Hyogo /SLAC, SSRL},
abstractNote = {No abstract prepared.},
doi = {},
journal = {Phys.Rev.B74:165106,2006},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 12 00:00:00 EST 2007},
month = {Fri Jan 12 00:00:00 EST 2007}
}
  • We present experimental and theoretical results for thevariation of the O 1s intensity from a NiO(001) surface as the excitationenergy is varied through the Ni 2p1/2,3/2 absorption resonances, and asthe incidence angle of the radiation is varied from grazing to largervalues. For grazing incidence, a strong multi-atom resonant photoemission(MARPE) effect is seen on the O 1s intensity as the Ni 2p resonances arecrossed, but its magnitude decreases rapidly as the incidence angle isincreased. Resonant x-ray optical (RXRO) calculations are found topredict these effects very well, although the experimental effects arefound to decrease at higher incidence angles faster than those inmore » theory.The potential influence of photoelectron diffraction effects on suchmeasurements are also considered, including experimental data withazimuthal-angle variation and correspondingmultiple-scattering-diffraction calculations, but we conclude that theydo not vary beyond what is expected on the basis of the change inphotoelectron kinetic energy. Varying from linear polarization tocircular polarization is found to enhance these effects in NiOconsiderably, although the reasons are not clear. We also discuss therelationship of these measurements to other related interatomic resonanceexperiments and theoretical developments, and make some suggestions forfuture studies in this area.« less
  • Complete experiments in inner-shell photoionization of linear molecules are achieved by combining the velocity vector correlation method, based on imaging and time-of-flight-resolved electron-ion-ion coincidence technique, with the use of elliptically polarized light. We report here on the molecular frame photoelectron angular distributions (MFPADs) obtained using this method in a single experiment performed with elliptically polarized light, for a site selective K-shell ionization of the NO molecule in the region of the N(1s){sup -1} and O(1s){sup -1} shape resonances. For a comparable photoelectron energy the N(1s){sup -1} and O(1s){sup -1} MFPADs display a remarkable symmetry in the inversion with respect tomore » the emission center of the NO molecule, while revealing common features such as, in particular, the dominant role of p and f partial-wave channels in the photoelectron emission. A large molecular frame circular dichroism is observed. These results are well predicted by multichannel Schwinger configuration interaction calculations (MCSCI), which provide additional information for NO{sup +}({sup 3}{pi}) and NO{sup +}({sup 1}{pi}) multiplet specific photoionization reactions. The analysis of the photoelectron-ion-ion kinetic energy correlation characterizes the ionic fragmentation channels populated after Auger decay of the NO{sup +}(1s{sub N} at {sub {approx}}{sub sol{approx}} at {sub O}){sup -1} ionic states.« less
  • We present a general theoretical methodology and related open-access computer program for carrying out the calculation of photoelectron, Auger electron, and x-ray emission intensities in the presence of several x-ray optical effects, including total reflection at grazing incidence, excitation with standing-waves produced by reflection from synthetic multilayers and at core-level resonance conditions, and the use of variable polarization to produce magnetic circular dichroism. Calculations illustrating all of these effects are presented, including in some cases comparisons to experimental results. Sample types include both semi-infinite flat surfaces and arbitrary multilayer configurations, with interdiffusion/roughness at their interfaces. These x-ray optical effects canmore » significantly alter observed photoelectron, Auger, and x-ray intensities, and in fact lead to several generally useful techniques for enhancing surface and buried-layer sensitivity, including layer-resolved densities of states and depth profiles of element-specific magnetization. The computer program used in this study should thus be useful for a broad range of studies in which x-ray optical effects are involved or are to be exploited in next-generation surface and interface studies of nanoscale systems.« less
  • Here, we report a study of the electronic structure of La{sub 5/3}Sr{sub 1/3}NiO{sub 4} by x-ray emission spectroscopy (XES) and resonant inelastic x-ray scattering (RIXS). The combination of these techniques has permitted us to reveal a complete picture of the occupied and unoccupied states, and to identify various charge transfer transitions appearing as inelastic features in the RIXS spectra. The results add further information on the electronic excitations in this system, and show how the combination of XES and RIXS can be an important experimental tool to address basic physics of complex systems.
  • We study the electronic structure of Sr{sub 2}RuO{sub 4}, a noncuprate layered superconductor ({ital T}{sub {ital c}}=0.93 K), using electron spectroscopy. X-ray photoemission spectroscopy shows that the single particle occupied density of states (DOS) is in fair agreement with the calculated DOS. However, resonant photoemission spectroscopy across the Ru 4{ital p}-4{ital d} threshold establishes the existence of a correlation satellite to the Ru 4{ital d} band. The results indicate substantial charge-transfer character at the Fermi level, with on-site correlations {ital U}{sub {ital dd}} comparable in magnitude to the Ru-O hopping integral, like the cuprates. {copyright} {ital 1996 The American Physicalmore » Society.}« less