TEMPERATURE-DEPENDENT GROWTH OF THENa/GaP(110)INTERFACE

D.A. Evans, P. Bailey, J.M.c Thornton and S. D'Addato
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D.A. Evans: AMRL, Athrofa Gogledd Ddwyrain Cymru (NEWI), Wrexham, Clwyd LL11 2AW, UK
P. Bailey: SERC Daresbury Laboratory, Warrington, WA4 4AD, UK
J.M.c Thornton: IRC in Surface Science, University of Liverpool, P.O. Box 147, Liverpool L69 3BX, UK
S. D'Addato: IRC in Surface Science, University of Liverpool, P.O. Box 147, Liverpool L69 3BX, UK

Surface Review and Letters (SRL), 1994, vol. 01, issue 04, 597-600

Abstract: The adsorption of Na onto GaP(110) surfaces is markedly different when the substrate is held below 120 K and above 140 K. At 120 K, the development of core and valence level photoelectron emission spectra is consistent with charge transfer between the alkali metal and the surface atoms of a chemically undisrupted substrate. However, at 140 K, similar measurements show very different spectral changes, resembling more closely a reactive interface, involving interaction between the Na and bulk GaP atoms.

Date: 1994
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DOI: 10.1142/S0218625X94000758

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