Tnt reliability of the widespread practice of calculating the optical properties of solids using pseudo wavefunctions instead of the true electron wavefunctions has been tested in the case of bulk GaAs. Pseudopotential calculations of the imaginary part of the dielectric function - where the matrix elements of the momentum operator are calculated between pseudo wavefunctions - have been compared with all-electron full-potential linear muffin-tin orbital calculations where the true wavefunctions are used. No evidence has been found of differences due to the different sets of wavefunctions employed in the two approaches.

All-electron versus pseudopotential calculation of optical properties: The case of GaAs / P. Monachesi, A. Marini, G. Onida, M. Palummo, R. Del Sole. - In: PHYSICA STATUS SOLIDI. A, APPLIED RESEARCH. - ISSN 0031-8965. - 184:1(2001), pp. 101-104.

All-electron versus pseudopotential calculation of optical properties: The case of GaAs

G. Onida;
2001

Abstract

Tnt reliability of the widespread practice of calculating the optical properties of solids using pseudo wavefunctions instead of the true electron wavefunctions has been tested in the case of bulk GaAs. Pseudopotential calculations of the imaginary part of the dielectric function - where the matrix elements of the momentum operator are calculated between pseudo wavefunctions - have been compared with all-electron full-potential linear muffin-tin orbital calculations where the true wavefunctions are used. No evidence has been found of differences due to the different sets of wavefunctions employed in the two approaches.
Settore FIS/03 - Fisica della Materia
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/190703
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