Spin wave amplification by a radiation field in free-carrier magnetic semiconductors |
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| Authors: | OAC Nunes |
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| Institution: | Departamento de Fisica, Universidade de Brasilia, 70910, Brasilia, D.F., Brasil |
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| Abstract: | The rate of change in the magnon population due to scattering by free carriers in the presence of a laser field is calculated. It is found that spin waves propagating parallel to the direction of propagation of the radiation field may be amplified over a relatively narrow band of q values. |
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