Optical probing of MgZnO/ZnO heterointerface confinement potential energy levels

V. V. Solovyev, A. B. Van'Kov, I. V. Kukushkin, J. Falson, D. Zhang, D. Maryenko, Y. Kozuka, A. Tsukazaki, J. H. Smet, M. Kawasaki

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Low-temperature photoluminescence and reflectance measurements were employed to study the optical transitions present in two-dimensional electron systems confined at MgxZn1-xO/ZnO heterojunctions. Transitions involving A- and B-holes and electrons from the two lowest subbands formed within the confinement potential are detected. In the studied density range of 2.0-6.5 × 1011cm-2, the inter-subband splitting is measured and the first excited electron subband is shown to be empty of electrons.

Original languageEnglish
JournalApplied Physics Letters
Volume106
Issue number8
DOIs
Publication statusPublished - 2015 Feb 23

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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