Absorption Studies of the Sulphur Donor in GaSb
P. Kaczora, A.M. Gerritsb, L. Dobaczewskia, Z. Kalińskia and A. Wittlinb
aInstitute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland
bHigh Field Magnet Laboratory - University of Nijmegen, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands
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The shallow-deep bistability of the sulphur-related DX centre in GaSb is demonstrated. After photoexcitation of the defect with the near-band gap light the metastable inter-donor transition in the far infrared can be ob­served. This observation allowed us to evaluate the polaron effective mass and polaron coupling constant for the material.
DOI: 10.12693/APhysPolA.87.399
PACS numbers: 71.55.Eq, 71.70.Ej, 78.50.Ge