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Valence Band Structure of ZnO and MgxZn1−xO

Published online by Cambridge University Press:  01 February 2011

R. Schmidt-Grund ,
C. Sturm ,
M. Schubert ,
B. Rheinländer ,
D. Faltermeier ,
H. Hochmuth ,
A. Rahm ,
J. Bläsing ,
C. Bundesmann  and
J. Zúñiga-Pérez
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R. Schmidt-Grund
Affiliation:
Schmidt-Grund@physik.uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Linnéstraße Leipzig, 04103 Leipzig, N/A, Germany
C. Sturm
Affiliation:
csturm@physik.uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Linnéstraße Leipzig, 04103 Leipzig, N/A, Germany
M. Schubert
Affiliation:
schubert@engr.unl.edu, University of Nebraska, Department of Electrical Engineering, Lincoln, NE, 68588-0511, United States
B. Rheinländer
Affiliation:
rheinlae@physik.uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Linnéstraße Leipzig, 04103 Leipzig, N/A, Germany
D. Faltermeier
Affiliation:
falterm@pi1.physik.uni-stuttgart.de, Universität Stuttgart, 1. Physikalisches Institut, Pfaffenwaldring 57, 70550 Stuttgart, N/A, Germany
H. Hochmuth
Affiliation:
hochmuth@server1.rz.uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Linnéstraße Leipzig, 04103 Leipzig, N/A, Germany
A. Rahm
Affiliation:
andreas.rahm@physik.uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Linnéstraße Leipzig, 04103 Leipzig, N/A, Germany
J. Bläsing
Affiliation:
juergen.blaesing@physik.uni-magdeburg.de, Otto-von-Guericke Universität Magdeburg, FNW/IEP/AHE, Postfach 4120, 39016 Magdeburg, N/A, Germany
C. Bundesmann
Affiliation:
carsten.bundesmann@iom-leipzig.de, Leibniz-Institut für Oberflächenmodifizierung e.V, Permoserstraße 15, 04318 Leipzig, N/A, Germany
J. Zúñiga-Pérez
Affiliation:
jesus.zuniga@physik.uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Linnéstraße Leipzig, 04103 Leipzig, N/A, Germany
T. Chavdarov
Affiliation:
chavdarov@physik.uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Linnéstraße Leipzig, 04103 Leipzig, N/A, Germany
M. Lorenz
Affiliation:
mlorenz@physik.uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Linnéstraße Leipzig, 04103 Leipzig, N/A, Germany
M. Grundmann
Affiliation:
grundmann@physik.uni-leipzig.de, Universität Leipzig, Institut für Experimentelle Physik II, Linnéstraße Leipzig, 04103 Leipzig, N/A, Germany
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Abstract

We present an attempt to clarify the valence band order of ZnO and MgxZn1−xO films grown by pulsed laser deposition (PLD) on sapphire substrates. We derive the dependence of spin orbit interaction (Δso) and crystal field interaction (Δcf) on the temperature, strain and cation replacement (Zn with Mg) and compared this with theoretical predictions. The strain was varied by using different orientated sapphire substrates (c-, r-, and m-plane orientations) and by varying the film thicknesses. All these investigations support the conclusion that the symmetry order of the valence band is Γ7-Γ9-Γ7 for ZnO and MgxZn1−xO for x ≤ 0.55.

Keywords

optical propertiesthin filmII-VI
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1035: Symposium L – Zinc Oxide and Related Materials–2007 , 2007 , 1035-L11-37
Copyright
Copyright © Materials Research Society 2008

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