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Optical and magneto-optical spectroscopy of thin ferromagnetic InMnAs layers |
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| Authors: | E A Gan’shina L L Golik V I Kovalev Z E Kun’kova B N Zvonkov A N Vinogradov |
| Institution: | (1) Moscow State University, Moscow, 119992, Russia;(2) Institute of Radio Engineering and Electronics (Fryazino Branch), Russian Academy of Sciences, pl. Vvedenskogo 1, Fryazino, Moscow region, 141120, Russia;(3) Physicotechnical Research Institute, Nizhni Novgorod State University, pr. Gagarina 23/3, Nizhni Novgorod, 603950, Russia |
| Abstract: | Spectral dependences of the refractive n(hν) and absorption k(hν) indices (hν= 1.2–4.4 eV) and the magneto-optical constant δ(hν) (hν = 0.5–4.4 eV) of the transverse Kerr effect of the InMnAs layers produced by laser deposition have been studied. The spectra of the diagonal ?(hν) and off-diagonal ?′hν) components of the permittivity tensor of the layers have been found. A comparison of the spectral dependences δ(hν), ?′(hν) and ?′2 × (hν)2 of the InMnAs and MnAs layers have been performed. Features in the spectra of the InMnAs layers have been attributed to a competition between the contributions of the In1 ? x Mn x As matrix and MnAs inclusions. |
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