Surface Structure—Experimental Methods

McRae, E.G.; Hagstrum, H. D.

doi:10.1007/978-1-4613-4313-4_2

Cited by 4 publications

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References 199 publications

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“…energy relative to Fermi energy, of 4 eV. Following McRae [29] the Fermi energy was arbitrarily set equal to 7 eV. The experimental electron energy loss data used was that of [30].…”

Section: Summary Of the Calculation And Results For Normal Incidencementioning

confidence: 99%

Low‐Energy Electron Reflection Intensities from 2HMoS₂ as Derived by Scattering Matrix Calculations

Smith

Lynch

1984

Physica Status Solidi (b)

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Results of scattering matrix calculations for the reflection intensities of low energy electrons in the range 0.25 to 15.75 eV are displayed for the layered transition metal dichalcogenide 2H-MoS,. An incident energy-dependent absorption potential based on energy loss data is used. The variation of signal with incident angle is explored and comparisons are made with experimental total current measurements. As with previous work it is concluded that the crystal structure determines the intensity spectrum and that a precise description of the individual scattering events is not necessary.Lea spectres de reflexion d'6lectrons d'energie basse, bnergie comprise entre 0.25 et 15.75 eV, ont 6th calcul6s en utilisant des matrices de diffusion; les rdsultats present& ici concernent le dichalcogknide ~H-MoS,, metal de transition it couches. On utilise un potentiel d'absorption dependant de 1'6nergie incidente et fond6 sur des pertes d'energie expbrimentales. La dependance signal-angle d'incidence est ktudi6e et comparee aux r6sultats expkrimentaux de courant total. En accord avec les articles precedents il est conch que c'est la structure cristalline qui ddtermine le spectre d'intensit6 et qu'une description dAtaill6e des Qvknements de diffusion individuelle n'est pas n6cessaire.

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“…energy relative to Fermi energy, of 4 eV. Following McRae [29] the Fermi energy was arbitrarily set equal to 7 eV. The experimental electron energy loss data used was that of [30].…”

Section: Summary Of the Calculation And Results For Normal Incidencementioning

confidence: 99%

Low‐Energy Electron Reflection Intensities from 2HMoS₂ as Derived by Scattering Matrix Calculations

Smith

Lynch

1984

Physica Status Solidi (b)

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Chemische Bindung an Oberflächen

Somorjai

1977

Angewandte Chemie

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Adsorbierte Teilchen konnen an der Oberflache eines Festkorpers chemisch gebunden werden (Chemisorption). Erst modernste Varianten der Elektronenbeugung und Elektronenspektroskopie ermoglichen nun Einsichten in die Natur solcher Oberflachenverbindungen, denen bei der heterogenen Katalyse sowie bei vielen anderen technisch wichtigen Vorgangen, z. B. Haftung und Schmierung, die Schlusselrolle zukommt. Die iiberwiegend lokalisierten Oberflachenbindungen lassen sich mit den kovalenten Bindungen in Clusterverbindungen vergleichen. Atomare Struktur reiner FestkorperoberflachenOberflachenatome befinden sich in einer unsymmetrischen Umgebung. Sie sind zwar umgeben von Atomen in und unter der Oberflachenschicht, es fehlen aber die Atome ,,uber" ihnen. Diese Umgebung an Oberflachen besitzt geringere Symmetrie als die der Atome im Volumen. Die strukturelle Symmetrieabweichung fur die Oberflachenatome kann eine Oberflachen-Rekonstruktion bewirken: Atome in der Oberflache nehmen neue Gleichgewichtslagen ein, die sich durch eine hohere Symmetrie oder eine grol3ere Uberlappung der beteiligten bindenden Orbitale auszeichnen. Obertlachen-RekonstruktionI*] Prof.

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The Surface Chemical Bond

Somorjai

1977

Angew. Chem. Int. Ed. Engl.

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Adsorbed particles can be bound chemically to the surface of a solid (chemisorption). Modern variants of electron diffraction and electron spectroscopy now enable us to gain an insight into the nature of such surface chemical bonds, which play a key role in heterogenous catalysis and many other technically important phenomena such as adhesion, lubrication etc. Predominantly localized surface bonds can be compared to the covalent bonds in cluster compounds.

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Surface Structure—Experimental Methods

Cited by 4 publications

References 199 publications

Low‐Energy Electron Reflection Intensities from 2HMoS₂ as Derived by Scattering Matrix Calculations

Low‐Energy Electron Reflection Intensities from 2HMoS₂ as Derived by Scattering Matrix Calculations

Chemische Bindung an Oberflächen

The Surface Chemical Bond

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Surface Structure—Experimental Methods

Cited by 4 publications

References 199 publications

Low‐Energy Electron Reflection Intensities from 2HMoS2 as Derived by Scattering Matrix Calculations

Low‐Energy Electron Reflection Intensities from 2HMoS2 as Derived by Scattering Matrix Calculations

Chemische Bindung an Oberflächen

The Surface Chemical Bond

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Product

Resources

About

Low‐Energy Electron Reflection Intensities from 2HMoS₂ as Derived by Scattering Matrix Calculations

Low‐Energy Electron Reflection Intensities from 2HMoS₂ as Derived by Scattering Matrix Calculations