Direct Determination of Sizes of Excitations from Optical Measurements on Ion-Implanted GaAs
Author(s) -
D. E. Aspnes,
S. M. Kelso,
C. G. Olson,
D. W. Lynch
Publication year - 1982
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.688
H-Index - 673
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.48.1863
Subject(s) - crystallite , valence (chemistry) , ion , exciton , materials science , atomic physics , core (optical fiber) , ion implantation , condensed matter physics , molecular physics , physics , quantum mechanics , metallurgy , composite material
Using a simple model that describes the decrease of the amplitudes of optical structures in ion-implanted crystals, projected areas of several valence and core excitons in GaAs are determined. The last remnant of crystal-related optical structure vanishes for crystallite areas less than (16 A)/sup 2/.
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