Angle-resolved photoemission on ZnSe(001): determination of conduction band quasiparticle shifts

Angle-resolved photoemission on ZnSe(001): determination of conduction band quasiparticle shifts

Angle‐resolved photoemission measurements have been performed on the ZnSe(001) surface and analyzed using ab initio LDA and GW calculations. The key point of this analysis consists of a comparison between measured and calculated photoemission spectra. We suggest that matching the main dispersive pea...

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Veröffentlicht in:Physica status solidi. C 2007-09, Vol.4 (9), p.3204-3209
Hauptverfasser: Fleszar, A., Hanke, W., Weigand, W., Kumpf, C., Heske, C., Umbach, E., Plucinski, L., Johnson, R. L.
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container_end_page 3209
container_issue 9
container_start_page 3204
container_title Physica status solidi. C
container_volume 4
creator Fleszar, A.
Hanke, W.
Weigand, W.
Kumpf, C.
Heske, C.
Umbach, E.
Plucinski, L.
Johnson, R. L.
description Angle‐resolved photoemission measurements have been performed on the ZnSe(001) surface and analyzed using ab initio LDA and GW calculations. The key point of this analysis consists of a comparison between measured and calculated photoemission spectra. We suggest that matching the main dispersive peaks in experiment and theory leads to the determination of quasiparticle shifts of the conduction bands relative to their LDA position. It is found that these experimental shifts largely exceed the calculated GW‐quasiparticle shifts leading to an increased free‐electron‐like character of the photoemission final states as compared to the LDA calculations. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
doi_str_mv 10.1002/pssc.200775422
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79.60.Bm
81.05.Dz
title Angle-resolved photoemission on ZnSe(001): determination of conduction band quasiparticle shifts
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