Polarizability of shallow donors in EuSe |
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Authors: | P Kuivalainen K Kaski S Eränen T Stubb H Stubb |
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Institution: | Electron Physics Laboratory, Helsinki University of Technology, SF-02150 Espoo 15, Finland;Semiconductor Laboratory, Technical Research Centre of Finland, SF-02150 Espoo 15, Finland |
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Abstract: | Permittivity measurements at a microwave frequency 24 GHz have been made on n-type EuSe at low temperatures 4.2–77 K after various annealing times. Consideration of different models for annealing dependent permittivity leads to the polarizability of Se vacancy defects as the most likely explanation. Donor polarizability is found and further an estimation for electron effective mass . |
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