Acceptor-Like Level of the EL2 Defect in its Metastable Configuration
P. Dreszer
High Pressure Research Center "Unipress", Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warszawa, Poland

M. Baj and A. Babiński
Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland
Received: August 8, 1990
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This paper presents for the first time the evident experimental confirmation that EL2 defect, while being in its metastable configuration, traps under hydrostatic pressure an additional electron, i.e. the acceptor-like (EL2*)0/- level enters the energy gap under pressure. We propose that in n-GaAs the EL2 thermal recovery takes always place via the (EL2*)- state.
DOI: 10.12693/APhysPolA.79.129
PACS numbers: 71.55.Eq, 78.50.Ge