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VOLUME 29 (1979) | ISSUE 1 | PAGE 69
Determination of the inter-band transition time in the valence band of gallium arsenide
The lifetime r0 of holes in a spin-detached band in л-type gallium arsenide crystal (1.4 χ 1018 cm ~3) is directly determined from luminescence depolarization in a transverse magnetic field. The measured value (1.3 X10 ~13 sec) is determined by processes of transition between the spin-detached band and the band of light holes and is close to the calculated value of the relaxation time for such a transition with emission of an optical phonon.