Free carrier absorption in a ferromagnetic semiconductor below Curie temperature |
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Authors: | CG Patil BS Krishnamurthy |
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Institution: | Department of Physics, Karnatak University Dharwar-580003, Karnataka, India |
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Abstract: | The free carrier absorption (FCA) in a non-degenerate ferromagnetic semiconductor due to electron-two-magnon scattering is calculated below the Curie temperature, assuming a wide conduction band model. It has been found that in EuO FCA due to two-magnon scattering is proportional to λ2·1 (wavelength of radiation) and it has been noticed that for high conductivity samples, explanation of FCA requires the inclusion of ionized impurity scattering of electrons besides the two-magnon process. |
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