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Published April 23, 1990 | Published
Journal Article Open

Formation of a high quality two-dimensional electron gas on cleaved GaAs

Abstract

We have succeeded in fabricating a two-dimensional electron gas (2DEG) on the cleaved (110) edge of a GaAs wafer by molecular beam epitaxy (MBE). A (100) wafer previously prepared by MBE growth is reinstalled in the MBE chamber so that an in situ cleave exposes a fresh (110) GaAs edge for further MBE overgrowth. A sequence of Si-doped AlGaAs layers completes the modulation-doped structure at the cleaved edge. Mobilities as high as 6.1×10^5 cm^2/V s are measured in the 2DEG at the cleaved interface.

Additional Information

© 1990 American Institute of Physics. Received 2 February 1990; accepted 28 February 1990.

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