Optical and transport properties of piezoelectric [111]-oriented strained Ga1-xInxSb/GaSb quantum wells

S. L. Wong, R. W. Martin, M. Lakrimi, R. J. Nicholas, T. Y. Seong, N. J. Mason, P. J. Walker

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Magneto-optical and magnetotransport studies have been conducted on a series of strained single Ga1-xInxSb/GaSb quantum wells grown along [001], [111]A, and [111]B directions by metal organic chemical vapor deposition. Both the interband transition energies and the two-dimensional carrier density show dramatic differences between the three orientations. Self-consistent calculations including the strain-induced piezoelectric field and the effect of band bending have been performed for the [111] structures. Results of the calculations agree very well with the observed dependences on indium content in the wells, well width, and cap thickness. The difference between [001] and [111] samples is due mainly to the presence of the piezoelectric field in the latter. The surface pinning field which is different in both direction and magnitude in the [111]A and [111]B structures contributes to the significant difference in these two orientations for cap thicknesses below 500 .

Original languageEnglish
Pages (from-to)17885-17891
Number of pages7
JournalPhysical Review B
Volume48
Issue number24
DOIs
Publication statusPublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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