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

doi:10.1117/12.962051

28 November 1989 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

Proceedings Volume 1144, 1st Intl Conf on Indium Phosphide and Related Materials for Advanced Electronic and Optical Devices; (1989) https://doi.org/10.1117/12.962051
Event: First International Conference on Indium Phosphide and Related Material for Advanced Electronic and Optical Devices, 1989, Norman, OK, United States

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.

Citation Download Citation

J. Ma, R. A. Puechner, W.P. Liu, R. Mezenner, A. M. Kriman, G. N. Maracas, D. K. Ferry, P. Chu, and H. H. Wieder "Magnetoconductance Oscillations In InGaAs/GaAs Lateral Surface Superlattices", Proc. SPIE 1144, 1st Intl Conf on Indium Phosphide and Related Materials for Advanced Electronic and Optical Devices, (28 November 1989); https://doi.org/10.1117/12.962051

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