Shakeup in soft-x-ray emission. I. The low-energy tail

Livins, Peteris; Schnatterly, S. E.

doi:10.1103/physrevb.37.6731

Cited by 33 publications

(12 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…16 Spectral features of SXE spectra are very similar to those of the spectra which were already measured by several authors. 5,6,[17][18][19][20] These structures have been well elucidated by the total DOS. The two strong structures at around h SXE ϭ90.2 and 92.5 eV have been assigned to the high DOS around L 2 Ј ; and L 1 bands.…”

Section: Resultsmentioning

confidence: 92%

Observation of resonant Raman scattering at the SiL2,3core exciton

et al. 1996

View full text Add to dashboard Cite

The resonant soft-x-ray emission spectra at the Si L 2,3 core exciton have been measured at 18 K by using synchrotron radiation. As an excitation light source, a very high-resolution monochromator with the undulator was used. The Raman scattering whose energy shifts in proportion to the excitation energy is found below the L 2,3 absorption edge. The intensity of the Raman scattering increases rapidly as the excitation energy comes close to the L 2,3 core exciton. It is found that the Raman scattering resonates at the L 2,3 core exciton which is made around the X 1 conduction minimum. The elementary excitation of the Raman scattering is the valence exciton that is a transition from X 1 or X 4 points in the valence band to the X 1 conduction minimum. The X 4 valence exciton has a characteristic excitation-energy dependence, so that it becomes broad and weak as the resonant Raman process goes to the ordinary Raman process.

show abstract

Section: Resultsmentioning

confidence: 92%

Observation of resonant Raman scattering at the SiL2,3core exciton

et al. 1996

View full text Add to dashboard Cite

show abstract

“…The low-energy tailing of the spectrum is believed to be caused by the finite lifetime of the valence holes and the weak low-energy hump is associated with multiple electron excitations accompanying the filling of the core hole. 16 As is seen in Fig. 1, the SXE is substantially dependent on the excitation energy when it is tuned below 144 eV.…”

mentioning

confidence: 75%

Excitation-energy dependence in theL2,3fluorescence spectrum of Si

et al. 1990

View full text Add to dashboard Cite

The Z.2,3 emission spectrum of c-Si, excited by monochromatized synchrotron radiation, has been recorded with a 5-m Rowland spectrometer. Dramatic spectral changes are observed as the excitation energy is varied from the 2p binding energy up to 144 eV. It is proposed that a spectator electron, close to the bottom of the conduction band, influences the emission spectrum. The observations suggest that interband shakeup is important in the excitation process, and that a population of low-lying levels, via initial-state shakeup, influences the high-energy-excited Si L emission spectrum.

show abstract

“…It has long been suggested that there is a final state rule for core-hole band spectral shapes ͑XAS, XES, and Auger͒ and an initial state rule for intensities in spectra from simple metals. [47][48][49][50][51] This has been applied and tested in several cases of sp bonding, including simple metals, 50-53 silicon, 54 and graphite. 11 For Si there is little to argue against a true core-hole-induced bound state at the L 2,3 edge, or for other semiconductors and other core thresholds ͑see references in Ref.…”

Section: General Aspects Of Core-hole Perturbationsmentioning

confidence: 99%

Theoretical and experimental study of the graphite 1sx-ray absorption edges

et al. 1996

View full text Add to dashboard Cite

Theoretical calculations in combination with experiments for the * and * x-ray absorption edges are reported for graphite. Theory and experiment agree well for the leading * and * resonances. By comparing theoretical calculations for a single graphene layer that include the effect of the core hole to similar calculations that do not, we find that 1s x-ray absorption in graphite is to be associated with an excitonic effect. Both the * and * excitons are localized primarily on the core-excited atom, but have significant weight on the nearest-neighbor atoms. The results are closely related to the electronic structure of a N impurity.

show abstract

Shakeup in soft-x-ray emission. I. The low-energy tail

Cited by 33 publications

References 37 publications

Observation of resonant Raman scattering at the SiL2,3core exciton

Observation of resonant Raman scattering at the SiL2,3core exciton

Excitation-energy dependence in theL2,3fluorescence spectrum of Si

Theoretical and experimental study of the graphite 1sx-ray absorption edges

Contact Info

Product

Resources

About