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Surface reconstructions and III-V stoichiometry: The case of cubic and hexagonal GaN

Book ·
OSTI ID:581017

Surface reconstructions for MBE grown GaN are identified. Different cases are considered according to the type of substrate or crystal symmetry and surface phase diagrams are obtained. Through different examples, it is shown how growth monitoring can be efficiently achieved through the use of surface reconstructions. Finally, from the observation that a residual arsenic overpressure in the MBE chamber changes the surface reconstructions of cubic (001) GaN grown onto 3C-SiC (001) substrates to that commonly observed for GaN growth on (001) GaAs, it is proposed that arsenic might be a surfactant for nitride growth.

OSTI ID:
581017
Report Number(s):
CONF-961202--; ISBN 1-55899-353-3
Country of Publication:
United States
Language:
English

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