Bistability and Metastability of the Gallium Vacancy in GaAs: The Actuator of2?
- 18 November 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 55 (21) , 2340-2343
- https://doi.org/10.1103/physrevlett.55.2340
Abstract
We have used the Green's-function technique to carry out electronic-structure and total-energy calculations for the gallium vacancy in GaAs and for the nearest-neighbor (arsenic vacancy)-(arsenic antisite) pair which results when an adjacent arsenic atom hops over and fills the gallium vacancy. The results are interpolated with a tight-binding model for intermediate positions of the moving arsenic atom. The system shows bistability and metastability, and seems to describe many properties of the 2 center.
Keywords
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