Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
67 (1995), S. 3334-3336
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The mechanism for Cl atom adsorption on GaAs(111)A surfaces is investigated using ab initio Hartree–Fock molecular orbital calculations on specially designed cluster models. The energy-minimized geometry and binding energies are obtained for Cl adsorbed on the (111)A surfaces. Cl is shown to bond to surface Ga atoms and result in (a) a lowering of the occupied surface electronic state energy, (b) a strongly enhanced surface dipole moment, and (c) a profound effect on the surface Ga–As bonding. The different bonding characteristics of Cl and H adsorbed on such surfaces are shown to manifest themselves in the local density of states. Model results are used to explain the observed enhanced photoluminescence response of chlorinated GaAs(111)A surfaces. © 1995 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.115238
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