The Spectral Momentum Density of Aluminium, Copper and Gold Measured by Electron Momentum Spectroscopy

Electron momentum spectroscopy (EMS) gives direct information of the full energy-resolved electron momentum densities of occupied states (bands) in solids – single crystal, polycrystalline or amorphous. Here we present data from a new high energy EMS spectrometer using 50 keV incident and 25 keV outgoing electrons, on polycrystalline specimens of aluminium, copper and gold. The spectral momentum densities show very significant electron-electron correlation effects which are in good agreement with many-body Green´s function calculations.

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Vector Processing and Parallel Processing in Many—Body Perturbation Theory Calculations of Electron Correlation Effects in Atoms and Molecules

Supercomputational Science ◽

10.1007/978-1-4684-5820-6_16 ◽

1990 ◽

pp. 201-210 ◽

Cited By ~ 2

Author(s):

D. J. Baker ◽

S. Wilson ◽

D. Moncrieff

Keyword(s):

Perturbation Theory ◽

Parallel Processing ◽

Electron Correlation ◽

Correlation Effects ◽

Many Body ◽

Atoms And Molecules ◽

Vector Processing ◽

Many Body Perturbation Theory ◽

Electron Correlation Effects

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Structure due to electron correlation effects in the energy dependence of high-energy ion-atom electron capture cross sections

Lecture Notes in Physics - High-Energy Ion-Atom Collisions ◽

10.1007/3-540-18732-4_110 ◽

2008 ◽

pp. 128-135

Author(s):

W. G. Graham

Keyword(s):

Energy Dependence ◽

Electron Capture ◽

Cross Sections ◽

Electron Correlation ◽

High Energy ◽

Capture Cross ◽

Correlation Effects ◽

Electron Correlation Effects ◽

Capture Cross Sections

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Molecular electron-correlation effects in high-energy electron scattering on gases

Acta Crystallographica Section A Foundations of Crystallography ◽

10.1107/s0108767384088644 ◽

1984 ◽

Vol 40 (a1) ◽

pp. C388-C388

Author(s):

M. Breitenstein ◽

H. Meyer ◽

A. Schweig

Keyword(s):

Electron Scattering ◽

Electron Correlation ◽

High Energy ◽

Energy Electron ◽

Correlation Effects ◽

High Energy Electron ◽

Molecular Electron ◽

Electron Correlation Effects

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Electron Momentum Density of Hexagonal Magnesium Studied by Compton Scattering

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.112.123 ◽

2006 ◽

Vol 112 ◽

pp. 123-132 ◽

Cited By ~ 7

Author(s):

Marek Brancewicz ◽

Henryk Reniewicz ◽

Andrzej Andrejczuk ◽

Ludwik Dobrzyński ◽

Eugeniusz Żukowski ◽

...

Keyword(s):

High Energy ◽

Momentum Density ◽

Directional Effect ◽

Electron Momentum ◽

Electron Momentum Density ◽

Cubic Metals ◽

Medium Resolution ◽

Small Anisotropy ◽

Directional Difference ◽

Good Agreement

Directional Compton profiles of single crystal of hcp magnesium have been measured with scattering vectors along the [10 10], [1120] and [0001] directions in reciprocal space (special directions ΓΜ, ΓΚ, ΓΑ) using high-energy (662 keV) gamma radiation from a 137Cs isotope source. The experimental data were compared with corresponding theoretical Korringa-Kohn-Rostoker (KKR) calculations. The directional difference profiles, both experimental (of medium resolution) and theoretical ones, show very small anisotropy of the electron momentum density in magnesium, 2-3 times lower than in zinc and cadmium single crystals, significantly lower than observed in cubic metals. This small directional effect is in good agreement with Compton 60-keV energy experiments and positron annihilation data presented by other authors.

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