Magnetoconductance oscillations in InGaAs/GaAs lateral surface superlattices

J. Ma, R. A. Puechner, W. P. Liu, R. Mezenner, A. M. Kriman, G. N. Maracas, D. K. Ferry, P. Chu, H. H. Wieder

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3 Scopus citations

Abstract

Lateral surface superlattice (LSSL) structures have been prepared on MBE grown In0.2Ga0.8As/GaAs strained layers by electron beam lithography and metal lift-off processing. The LSSL is induced by a 160-nm period Ti/Pt/Au grid replacing the normal metal gate of a HEMT. Magnetoconductance measurements made at 5K show universal conductance fluctuations with an amplitude of 0.1e2/h and Aharonov-Bohm type periodic oscillations with h/e periodicity in the flux coupled through each cell of the superlattice. To the best of our knowledge, this is the first observation of Aharonov-Bohm effect in a solid state system that was not in a ring structure.

Original languageEnglish (US)
Pages (from-to)619-625
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1144
DOIs
StatePublished - Nov 28 1989

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ASJC Scopus subject areas

  • Applied Mathematics
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Computer Science Applications

Cite this

Ma, J., Puechner, R. A., Liu, W. P., Mezenner, R., Kriman, A. M., Maracas, G. N., Ferry, D. K., Chu, P., & Wieder, H. H. (1989). Magnetoconductance oscillations in InGaAs/GaAs lateral surface superlattices. Proceedings of SPIE - The International Society for Optical Engineering, 1144, 619-625. https://doi.org/10.1117/12.962051