Lateral superlattices on parabolic quantum wells

S. Lindemann, M. Bänninger, T. Ihn, T. Heinzel, S. E. Ulloa, K. Ensslin, K. Maranowski, and A. C. Gossard
Phys. Rev. B 66, 165317 – Published 29 October 2002
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Lateral superlattices have been fabricated on AlGaAs parabolic quantum wells. Two electrical subbands occupied in the growth direction lead to two sets of classical commensurability oscillations, each characterized by a different Fermi velocity. The dominant features can be explained by combining quantum-mechanical subband occupation and classical commensurability oscillations. The potential modulation of the lateral superlattice can be tuned by the nanopatterned top gate as well as by a back gate electrode.

  • Received 29 August 2002


©2002 American Physical Society

Authors & Affiliations

S. Lindemann, M. Bänninger, T. Ihn, T. Heinzel*, S. E. Ulloa, and K. Ensslin

  • Solid State Physics Laboratory, ETH Zürich, 8093 Zürich, Switzerland

K. Maranowski and A. C. Gossard

  • Materials Department, University of California, Santa Barbara, California 93106

  • *Present address: Fakultät für Physik, Universität Freiburg i.Br., 79104 Freiburg, Germany.
  • Present address: Department of Physics and Astronomy, Ohio University, Athens, OH 45701-2979

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Vol. 66, Iss. 16 — 15 October 2002

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