Theory of enhanced bandgap non-parabolicity in GaNxAs1-x and related alloys

Authors
Lindsay, A O'Reilly, EP
Citation
A. Lindsay et Ep. O'Reilly, Theory of enhanced bandgap non-parabolicity in GaNxAs1-x and related alloys, SOL ST COMM, 112(8), 1999, pp. 443-447
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
112
Issue
8
Year of publication
1999
Pages
443 - 447
Database
ISI
SICI code
0038-1098(1999)112:8<443:TOEBNI>2.0.ZU;2-6
Abstract
We present a quantitative two-band theory which describes analytically the composition dependence of the energy gap, interband momentum matrix element and band edge effective masses in GaNxAs1-x alloys for x < similar to 0.1. The model is confirmed using an sp(3)s* tight-binding Hamiltonian, whose r esults agree well, both with experiment and previous pseudopotential calcul ations. (C) 1999 Elsevier Science Ltd. All rights reserved.