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1992 | 82 | 4 | 609-612
Article title

The Symmetry of the EL2 Defect in the Metastable State

Content
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Languages of publication
EN
Abstracts
EN
We measured recovery of the optical absorption of EL2 under [100] and [111] uniaxial stress during heating of the crystal. The recovery step, occurring at about 45 K in n-type GaAs, splits into two components under [111] stress, and no splitting is observed under [100] stress. The same behavior under uniaxial stress shows the recovery occurring at 125 K in semi-insulating GaAs. A fraction of centers recovering at lower temperature can be altered by excitation of metastability with polarized light or by excitation under stress. These results indicate that EL2 in the metastable state is trigonally distorted from the tetrahedral symmetry of the ground state.
Keywords
EN
Year
Volume
82
Issue
4
Pages
609-612
Physical description
Dates
published
1992-10
References
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv82z408kz
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