High-resolution auger spectra of adsorbates

Fuggle, J. C.; Umbach, E.; Kakoschke, R.; Menzel, D.

doi:10.1016/0368-2048(82)85060-3

Cited by 76 publications

(19 citation statements)

References 71 publications

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“…This shoulder is typical of compounds with an OÈM bond of considerable covalent character. 36 The di †erent oxidation processes induced at room temperature by an oxygen plasma or a beam of oxygen ions can be related to the ballistic e †ects induced by the accelerated ions in the bombardment samples (i.e sputtering, relocation, etc.) ; these processes are usually associated with the interaction of high-energy ions with solid surfaces.29 In trying to elucidate the incidence of these ballistic e †ects in our results, further bombardment experiments were carried out on the MoO 3 sample.…”

Section: X-ray Photoelectron Spectroscopymentioning

confidence: 99%

Oxidation of molybdenum surfaces by reactive oxygen plasma and O2+ bombardment: an auger and XPS study

López‐Carreño

Benítez

Viscido

et al. 1998

Surf. Interface Anal.

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Section: X-ray Photoelectron Spectroscopymentioning

confidence: 99%

Oxidation of molybdenum surfaces by reactive oxygen plasma and O2+ bombardment: an auger and XPS study

López‐Carreño

Benítez

Viscido

et al. 1998

Surf. Interface Anal.

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“…There has been an increasing interest in AES as a tool for probing the local bonding configurations of chemisorbed molecules because of the site specific nature of the core hole decay process (Baker et al 1981;Jennison et al 1981;Jennison 1982;Koel et al 1982;Fuggle et al 1982;Umbach and Hussain 1984;Laramore 1985). The complexity of the Auger process has detracted from the usefulness of AES except as a finger-print of a given bonding scheme.…”

Section: Introductionmentioning

confidence: 99%

Deexcitation Electron Spectroscopy: A Probe for the Localisation of Valence Wavefunctions in Free and Adsorbed Molecules

Eberhardt¹,

Plummer²,

Chen³

et al. 1986

Aust. J. Phys.

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Deexcitation electron spectroscopy (DES) is the measurement of the kinetic energy distribution of electrons emitted in the decay of highly excited states of molecules formed by core to bound resonant photon absorption. This spectroscopy has the potential of becoming a new probe of the localised properties of the valence electronic states in molecules as well as furnishing new insights into the dynamics of the electronic decay and screening processes. This paper describes the basic principles of DES by following the evolution of the DES spectra in CO, from the isolated CO molecule in the gas phase, through the transition metal carbonyls, to CO adsorbed on a surface. In all three cases the energetics, intensities and dynamics of DES will be compared with photoelectron spectroscopy (PES) and Auger electron spectroscopy (AES).

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“…It can also be assumed that the naphthalene core is slightly bent and thus the anhydride carbon atoms are also displaced downwards. This is supported by the relatively small coherent fraction found for C1s (0.579 (24)), in particular when this value is compared with the coherent fraction of the anhydride oxygen (3)). This is in agreement with a recent investigation using LEED-IV which resulted in a significant bending of the naphthalene core of the molecule in both molecular principal axis [11].…”

Section: Results Based On the Photoelectron Yieldmentioning

confidence: 60%

“…In our case, for the C1s PE and the O-KLL Auger yield a simple subtraction of a linear background was sufficient (figure 2). The peak integration range for the O-KLL peak was chosen based on the characteristic shape of various O-KLL structures which is known from the literature [24]. The peak on the lower kinetic energy side is attributed to the substrate and hence not taken into account.…”

Section: Data Acquisition and Raw Data Treatmentmentioning

confidence: 99%

Fourth Workshop on Computer Optics, Togliatti, February 19–24, 1990

Казанский¹,

Семенов²

1990

Sov. J. Quantum Electron.

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We investigated the adsorption geometry of the model system NTCDA (1,4,5,8-naphthalin-tetracarboxylicacid-dianhydride) on Ag(111) using the normal incidence x-ray standing wave (NIXSW) technique. For the relaxed monolayer structure a significant vertical distortion of the molecule is found upon adsorption. The carboxylic oxygen atoms at the corners of the molecule are located 0.25(3) Å closer to the topmost Ag atoms than the naphthalene core at 2.997(16) Å. This distortion effect is similar to that of the larger molecule (3,4,9,10-perylene tetracarboxylicacid-dianhydride) (PTCDA)/Ag(111) (Hauschild A et al 2005 Phys. Rev. Lett. 95 209602), but the chemisorptive bonding is weaker. Our structural investigation is based on photoelectron and Auger emission NIXSW data, the independent measurement of which allows us to correct in a self-consistent way for non-dipolar contributions to the photoelectron yield as well as for electron induced Auger processes, two effects which may significantly influence the structural results if not considered.

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High-resolution auger spectra of adsorbates

Cited by 76 publications

References 71 publications

Oxidation of molybdenum surfaces by reactive oxygen plasma and O2+ bombardment: an auger and XPS study

Oxidation of molybdenum surfaces by reactive oxygen plasma and O2+ bombardment: an auger and XPS study

Deexcitation Electron Spectroscopy: A Probe for the Localisation of Valence Wavefunctions in Free and Adsorbed Molecules

Fourth Workshop on Computer Optics, Togliatti, February 19–24, 1990

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