Measurement of the surface excitation probability of medium energy electrons reflected from Si, Ni, Ge and Ag surfaces

Werner, Wolfgang; Kövér, L.; Egri, Sándor; Tóth, J.; Varga, D.

doi:10.1016/j.susc.2005.04.018

Cited by 50 publications

(62 citation statements)

References 25 publications

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“…In this mode the quantum Landau formulaÎ(p, ω) 1 gives quite similar loss bands to I(p, ω) 1 . In the small take-off angle (10 • ) mode the intrinsic photoemission amplitude τ in (p) has quite a small contribution because p is nearly normal to the X-ray polarization. The extrinsic excitation amplitude τ ex (p), however, can have appreciable contribution when Q ′ is nearly parallel to the X-ray polarization (see Eq.…”

Section: The Comparison Between the Calculated Results By Use Of I(p ω)mentioning

confidence: 99%

“…Except for the nearly forbidden direction (10 • ), http://www.sssj.org/ejssnt (J-Stage: http://www.jstage.jst.go.jp/browse/ejssnt/)the one-plasmon loss functions obtained from the quantum Landau formula works so well even at rather low energy; 60 eV for 90…”

Section: Discussionmentioning

confidence: 99%

“…The surface sensitivity is low compared with the grazing emission (10 • ) so that the surface plasmon loss intensities are comparable with the bulk plasmon loss intensities in the energy range, ε p ≤ 500 eV. For rather high-energy photoemission the bulk loss intensity is much stronger than that for the surface loss.…”

Section: I(p ω)mentioning

confidence: 99%

“…Recent experimental results for the plasmon losses demonstrate the importance of the quantum interference [7,8]. On the other hand the three step model has been widely used for practical purposes [9,10]. The photoemission is described as threestep process: (1) photo excitation, (2) transport to the surface, and (3) passage through the surface.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Theoretical Study of Plasmon Losses in Low-energy Photoemission Spectra

Ohori

Shinotsuka

Kazama

et al. 2012

e-J. Surf. Sci. Nanotechnol.

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We study the energy-and angular-dependence of bulk and surface plasmon losses in low-and intermediateenergy region (< 1000 eV), and investigate the applicability of the quantum Landau formula which can explain overall plasmon loss features accompanied by core level photoemission. As an example, we calculate the Al 2s photoemission in the photoelectron kinetic energy range from 60 to 1000 eV measured at normal to the surface and at small take-off angles (10 • and 30 • ). For the normal emission the quantum Landau formula gives quite similar results to those without the high-enegy approximation even at 60 eV. On the other hand we observe the considerably large difference at the grazing angle emission (10 • ). Even at 30• we can safely apply the quantum Landau formula for the plasmon analyses above 250 eV.

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Section: The Comparison Between the Calculated Results By Use Of I(p ω)mentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: I(p ω)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Theoretical Study of Plasmon Losses in Low-energy Photoemission Spectra

Ohori

Shinotsuka

Kazama

et al. 2012

e-J. Surf. Sci. Nanotechnol.

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“…Models have been elaborated by Oswald [16] and Chen [17]. The most recent results and material parameters are published by Werner et al [18], Nagatomi and Goto [19], Kwei et al [20] and Gergely et al [21].…”

Section: Surface Excitation Lossesmentioning

confidence: 99%

The Inelastic Mean Free Path οf Electrons. Research in Budapest, Warsaw, Wrocław and Clermont-Ferrand. Brief History and New Results

et al. 2008

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Intrinsic and extrinsic excitations in deep core photoelectron spectra of solid Ge

Kövér

Novák

Egri

et al. 2006

Surface & Interface Analysis

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In the quantitative analysis of buried interfaces or the exploration of local electronic structures around component atoms in bulk solids, spectroscopy of transitions in the deep atomic core has an increasingly significant role to play. A key issue in understanding the deep core photoelectron spectra is the identification and separation of the contributions that are attributable to different excitations leading to loss of energy of the emitted photoelectrons. In this work, Ge 1s and 2s photoelectron spectra are analyzed using various models to interpret the measured spectral shapes. A detailed comparison of the results derived from the different approaches is presented.

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Measurement of the surface excitation probability of medium energy electrons reflected from Si, Ni, Ge and Ag surfaces

Cited by 50 publications

References 25 publications

Theoretical Study of Plasmon Losses in Low-energy Photoemission Spectra

Theoretical Study of Plasmon Losses in Low-energy Photoemission Spectra

The Inelastic Mean Free Path οf Electrons. Research in Budapest, Warsaw, Wrocław and Clermont-Ferrand. Brief History and New Results

Intrinsic and extrinsic excitations in deep core photoelectron spectra of solid Ge

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