Atomic structure of twins in GaAs
- 23 July 1990
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 57 (4) , 346-347
- https://doi.org/10.1063/1.103687
Abstract
Two types of twins with different atomic structure may exist in GaAs: rotation type and reflection type. A selective chemical etching technique was employed to clarify which of these two twin types occurs in practical GaAs crystals. Twins in an As-rich horizontal Bridgman (HB) GaAs, a Ga-rich HB GaAs, and a liquid-encapsulated Czochralski GaAs were studied, and the results showed that all of the studied twins were rotation type. This suggests that the bonding configuration at the twin plane is a more important factor than stoichiometry of the crystal, in determining the type of twins in GaAs.Keywords
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