Complete Screening and Quasiatomic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">MVV</mml:mi></mml:math>Auger Line Shapes due to Double Core Ionization

Siervo, Abner de; Landers, Richard; Kleiman, G. G.

doi:10.1103/physrevlett.86.1362

Cited by 2 publications

(5 citation statements)

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“…The values of the binding energy of features in EDC observed in the present work are slightly different from those of Björneholm et al [6] and two lines found in the present work are missing in their spectrum. The XPS 3p lines are explainable in terms of the multiplets formed by the electronic configuration of 3p 5 3d 9 . The lifetime of this final state is very short and the 3d hole is destroyed through screening by conduction electrons.…”

Section: Resultsmentioning

confidence: 96%

“…(8) In the range 76 hν 67 eV, the location of the highest peak, the apparent peak of the two-hole-bound-state band, deviates from the constant-binding-energy line for ε b = 6.3 eV. (9) The complete merger of the MVV sCK band and two-hole-bound-state band occurs in the region 70 hν 66 eV. (10) The change in the profile of the MVV sCK band cannot be interpreted in terms of the intensity changes of the satellites at ε b = 11 and 13.5 eV caused by resonance.…”

Section: Discussionmentioning

confidence: 95%

“…Oh et al [54] pointed out that the distribution of the 3d n configuration to give the average number of 3d electrons per atom is given by the binomial distribution if the correlation interaction between 3d electrons is ignored. The binomial distribution gives fractions of 3d n to be 0.583, 0.344, and 0.088 for 3d 10 , 3d 9 , and 3d 8 , respectively. If this is correct, the major component of the ground state of Ni arises from the d 10 configuration.…”

Section: Discussionmentioning

confidence: 99%

“…However, this is not the case. Jo and Sawatzky [55] claimed that the distribution of the 3d configurations in the ground state is 15-20% 3d 10 , 60-70% 3d 9 , and 15-20% 3d 8 to explain the experimental data well. Tanaka and Jo [56] claimed that the distribution is 21%, 61%, and 18% for n = 10, 9, and 8, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…Physically interesting examples are found in 4d transition metals. Siervo et al [9] analysed the M 4,5 VV spectra of Rh, Pd and Ag caused by the excitation of the L 3 electron and subsequent generation of two holes in the M 4,5 state. They concluded that the process in Rh is band-like and those in Pd and Ag are quasi-atomic.…”

Section: Introductionmentioning

confidence: 99%

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MVV super Coster–Kronig spectra of nickel near the excitation threshold

Songsiriritthigul¹,

Wongkokua²,

Nakajima³

et al. 2005

J. Phys.: Condens. Matter

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The MVV super Coster-Kronig (sCK) spectra of metallic Ni have been measured near the 3p excitation threshold by varying excitation photon energy. The results have been interpreted on the basis of the Cini-Sawatzky theory. The measured sCK band has composite structure with features at electron kinetic energy of 49.8, 56.3, 59.5, and 60.5 eV. If we interpret the band at 49.8 eV to be the split-off quasi-atomic band, we can estimate the effective intra-atomic Coulomb energy at a large value of 8 eV. The spectral shape of the MVV sCK band measured by excitation with vacuum ultraviolet light does not coincide with that obtained by the Mg Kα excitation or with that of the L 3 VV Coster-Kronig band. The shape of the MVV sCK spectrum changes as excitation energy changes. The excitation-energy range in which such spectral change occurs extends from the 3p threshold to 10 eV above it. As the kinetic energy for the MVV sCK band starts to overlap that of the two-hole-bound-state band, the MVV sCK band changes its shape considerably and the two spectra become inseparable. In this excitation-energy region, the spectator electron excited optically forms a virtual bound state with the two 3d holes. The location of the apparent two-hole-bound-state band shifts toward high binding energy on the 3p-3d resonance. This can be interpreted as a kind of final state interaction. The suggested intermediate and final states of the single-step transition are consistent with the constant-initial-state spectra and total photoyield spectrum. The roles of the screening by conduction electrons and the sd hybridization are emphasized.

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Section: Resultsmentioning

confidence: 96%