Formation of the ZnSe/(Te/)GaAs( 1 0 0 ) heterojunction

Gleim T, Heske C, Umbach E, Schumacher C, Gundel S, Faschinger W, Fleszar A, Ammon C, Probst M, Steinrück HP (2003)

Publication Type: Journal article, Original article

Publication year: 2003

Journal

Surface Science Elsevier

Original Authors: Gleim Th., Heske C., Umbach E., Schumacher C., Gundel S., Faschinger W., Fleszar A., Ammon Ch., Probst M., Steinrück H.-P.

Publisher: Elsevier

Book Volume: 531

Pages Range: 77-85

Journal Issue: 1

DOI: 10.1016/S0039-6028(03)00439-4

Abstract

We have investigated the underlying electronic and structural effects of the previously published influence of a Te substrate pretreatment on the heterovalent ZnSe/GaAs(100) interface [Appl. Phys. Lett. 78 (2001) 1867]. For this purpose, photoelectron spectroscopy and density functional theory calculations were employed. To determine the valence band maximum accurately, the choice of suitable photon energies to maximize the contribution from the Γ-point as well as a variation of the k-vector by measuring under selected angles is investigated. We discuss the resulting band offsets with respect to the atomic interface structure and to the broadening of core level line shapes. The theoretical investigations focus on the effect of replacing Se by Te atoms at the interface, particularly in view of the lattice structure and the band offsets. We find that Te helps to establish a group-VI-rich interface, thus lowering the valence band offset, while maintaining a good crystal quality by acting as a diffusion barrier for Se atoms. © 2003 Elsevier Science B.V. All rights reserved.

Authors with CRIS profile

Hans-Peter Steinrück Lehrstuhl für Physikalische Chemie II

Involved external institutions

Julius-Maximilians-Universität Würzburg DE Germany (DE)

How to cite

APA:

Gleim, T., Heske, C., Umbach, E., Schumacher, C., Gundel, S., Faschinger, W.,... Steinrück, H.-P. (2003). Formation of the ZnSe/(Te/)GaAs( 1 0 0 ) heterojunction. Surface Science, 531(1), 77-85. https://doi.org/10.1016/S0039-6028(03)00439-4

MLA:

Gleim, Thomas, et al. "Formation of the ZnSe/(Te/)GaAs( 1 0 0 ) heterojunction." Surface Science 531.1 (2003): 77-85.

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