Zeeman studies of the 0.839eV emission in SI GaAs:Cr
1980; Elsevier BV; Volume: 35; Issue: 4 Linguagem: Inglês
10.1016/0038-1098(80)90510-4
ISSN1879-2766
AutoresNathan Killoran, B.C. Cavenett, W. E. Hagston,
Tópico(s)Atomic and Molecular Physics
ResumoThe multi-structured zero phonon transitions of the 0.839eV emission observed in SI GaAs:Cr have been investigated by Zeeman measurements. Magnetic splittings for the directions [111], [110] and [100] as well as angular dependence studies in the (110) plane show that the centre has a symmetry axis along [111] with a small orthorhombic distortion. The emissions cannot be due to the isolated [100] Jahn-Teller distorted Cr2+ ions observed in magnetic resonance but to [111] centres such as the (Cr2+-donor) pairs as suggested by White.
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