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Optical and magneto-optical properties of room-temperature ferromagnetic In(Ga)MnAs layers, deposited by pulse laser ablation |
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| Authors: | E.A. Gan'shina,L.L. Golik,Z.E. Kun&rsquo kova,A.N. Vinogradov |
| Affiliation: | a Faculty of Physics, Moscow State M.V. Lomonosov University, Moscow 119991, Russian Federation b Institute of Radioengineering and Electronics, RAS, 141190 Fryazino, Russian Federation c Nizhny Novgorod State University, 603950 Nizhny Novgorod, Russian Federation |
| Abstract: | Spectral dependences of refractive and absorption indices n(hν), k(hν) (hν=1.2-4.4 eV) and the transversal Kerr effect δ(hν) (hν=0.5-4.4 eV) in In(Ga)MnAs layers fabricated by laser deposition have been investigated. Spectra of the diagonal and off-diagonal components of the dielectric permittivity tensor of these layers have been calculated. Comparison of the spectral dependences δ(hν), ε′(hν) and ε′2×(hν)2 of the In(Ga)MnAs layers with similar spectra for MnAs has been carried out. Particular features in the spectra of the In(Ga)MnAs layers have been explained by a competition of contributions of the In1−x(Ga1−x)MnxAs host and MnAs inclusions. |
| Keywords: | 61.72.Vv 78.20.Ci 78.20.Ls 33.55.b 75.50.Pp |
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