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Band structure effects on the plasmon dispersion in simple metals

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Zeitschrift für Physik B Condensed Matter

Abstract

The real part of the effective dielectric function is derived analytically in the pseudopotential approximation. For anyk-direction, the theory allows the evaluation of the plasmon dispersion,ω p (k), which is found to be anisotropic in general due to band structure effects. Application of the theory to Al yields an isotropic shift atk=0 ofΔω p (0) v ≈ − 0.3 eV and explains the recently observed anisotropic behaviour of the dispersion very well fork < 0.6k F .

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  1. Institut für Festkörperforschung, Kernforschungsanlage Jülich GmbH, Postfach 1913, D-5170, Jülich 1, Federal Republic of Germany

    Kurt Sturm

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  1. Kurt Sturm
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Sturm, K. Band structure effects on the plasmon dispersion in simple metals. Z Physik B 29, 27–32 (1978). https://doi.org/10.1007/BF01354834

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  • DOI: https://doi.org/10.1007/BF01354834

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