<i>Surface Crystallography: An Introduction to Low Energy Electron Diffraction</i>

Clarke, L.J.; Marcus, Paul

doi:10.1063/1.2819989

Cited by 39 publications

(64 citation statements)

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“…The perpendicular com- ponent of the crystal wavevector k ┴ is not conserved across the crystal surface to vacuum interface, but instead can be found using the inner potential correction: (1) where θ is the emission angle of the photoelectron or the incident angle of the electron in inverse photoemission and U in is the inner potential of the solid. In most elemental metals the free-electron-like s band is well defi ned, and the inner potential U in is approximately equal to the difference between the vacuum level and the bottom of this free-electron-like s band [32,33]. However, this latter feature should not be expected to work for metallic compounds.…”

Section: The Cos 2 Bulk Band Structurementioning

confidence: 99%

The electronic band structure of CoS₂

Wu¹,

Losovyj²,

Wisbey³

et al. 2007

J. Phys.: Condens. Matter

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Manno, M.; Wang, L.; Leighton, C.; and Dowben, Peter A., "The electronic band structure of CoS 2 " (2007 AbstractAngle-resolved and energy-dependent photoemission was used to study the band structure of paramagnetic CoS 2 from high-quality single-crystal samples. A strongly dispersing hybridized Co-S band is identifi ed along the Γ-X line. Fermi level crossings are also analyzed along this line, and the results are interpreted using band structure calculations. The Fermi level crossings are very sensitive to the separation in the S-S dimer, and it is suggested that the half-metallic gap in CoS 2 may be controlled by the bondingantibonding splitting in this dimer, rather than by exchange splitting on the Co atoms.

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Section: The Cos 2 Bulk Band Structurementioning

confidence: 99%

The electronic band structure of CoS₂

Wu¹,

Losovyj²,

Wisbey³

et al. 2007

J. Phys.: Condens. Matter

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“…In particular, behavior of the peak at 0.3-1.0 eV binding energy in the normal photoemission spectra can be directly attributed to the Fermi level crossing of the band at about 21% along the Brillouin zone edge ͑0.26 Surprising variations in the experimental inner potential with kinetic energy are also known from dynamical LEED scattering. 44 The inner potential for molybdenum ͑100͒ derived from LEED ͑Ref. 49͒ was seen to vary from 18 eV ͑0-40 eV electron kinetic energies͒ to about 14 eV ͑above 80 eV electron kinetic energy͒.…”

Section: Bulk Mo Band Structure Along š112‹ and Perturbations In mentioning

confidence: 99%

“…16,44 The band structures were calculated by the scalar relativistic all-electron LAPW method for thin films, [45][46][47] which explores a single ͑not periodically repeated͒ slab of several monolayers of thickness to simulate both surface and bulk contributions. In the interior of the slab, the potential is defined in the muffin-tin ͑MT͒ form, while in the vacuum region the potential depends only on z coordinate ͑that is, normal to the surface͒.…”

Section: Experimental and Calculational Techniquesmentioning

confidence: 99%

Interplay between plasmons and the band structure for the Mo(112) surface

2001

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"Interplay between plasmons and the band structure for the Mo(112) surface" (2001). Peter Dowben Publications. 25. http://digitalcommons.unl.edu/physicsdowben/25 Interplay between plasmons and the band structure for the Mo"112… surface Recent photoemission and inverse photoemission results for the Mo͑112͒ surface are discussed in the framework of the calculated band structure. For the Mo͑112͒ surface, the main photoemission features combine contributions from both the surface and the bulk. Except for those photon energies near to excitations of the bulk and multipole surface plasmons, the comparison of the bulk band structure, along the k points normal to the surface, shows a good agreement with photoemission spectra in the position of the critical points. The dominant surface states at ⌫ are found to have the a 1 symmetry, while the band along ⌫ -Ȳ at about 0.8 eV binding energy is found to be odd with respect to the ⌫ -X mirror plane. The surface-induced enhancement of photoemission-the surface photoeffect-is indicated and is shown to be responsible for dramatic changes in the spectra when the photon energy falls into the region of the multipole surface plasmons.

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“…Multiple scattering computations are then carried out on trial adsorbate geometries, frequently those suggested by information from 1-ffiEELS, to obtain the best possible match with experiment. This procedure is similar in many respects to the analysis in x-ray diffraction, but is complicated by the multiple scattering of"electrons which must be calculated [2].…”

Section: Introductionmentioning

confidence: 99%

“…LEED utilizes the fact that the wavelength of 20-200 e V electrons is on the order of angstroms, a typical atomic separation in molecules. Elastic scattering of electrons in this energy range from adsorbate-covered surfaces therefore results in diffraction which can be analyzed to obtain adsorbate bond lengths and bond angles (2]. For example, if an adsorbate forms an ordered overlayer on a single crystal substrate, then the diffracted electrons will constructively interfere to produce a pattern of spots which can be imaged on a fluorescent screen in the LEED experiment.…”

Section: Introductionmentioning

confidence: 99%