Journal
JOURNAL OF APPLIED PHYSICS
Volume 92, Issue 11, Pages 6567-6571Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1512967
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We report homoepitaxial selective growth of GaAs on a 350 nm period two-dimensional SiO2-patterned substrate by molecular beam epitaxy. Ga atoms are largely desorbed from a SiO2 surface at high growth temperature (greater than or similar to615 degreesC) when the Ga flux is about 0.1 monolayer/s. Under these conditions, a GaAs epilayer selectively grown in circular openings on GaAs(100) with a diameter of about 120-200 nm bounded by a 40 nm thick SiO2 mask shows faceting over its entire surface for 100 nm thick deposition. Lateral growth associated with faceting over the SiO2 mask in <100> is observed. (C) 2002 American Institute of Physics.
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