Influence of direct transitions between spin branches on free-carrier absorption of ferromagnetic semiconductors |
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| Authors: | NS Almeida LCM Miranda |
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| Institution: | Departamento de Física, Universidade Federal do Rio Grande do Norte, 59 000 Natal, RN, Brazil;Departamento de Física, Universidade de Brasília, 70910 Brasília, DF, Brazil |
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| Abstract: | The direct spin-flip intraband absorption coefficient due to transitions of conduction electrons between the spin branches in degenerate ferromagnetic semiconductors is calculated. It is shown that the absorption coefficient consists essentially of a sharp peak at the band splitting frequency which shifts towards low frequencies as the temperature increases from T = 0 K. |
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