Optical and magneto-optical properties of room-temperature ferromagnetic In(Ga)MnAs layers, deposited by pulse laser ablation

• Published in: Journal of magnetism and magnetic materials Vol. 321; no. 7; pp. 829 - 832
• Main Authors: Gan'shina, E.A., Golik, L.L., Kovalev, V.I., Kun’kova, Z.E., Zvonkov, B.N., Vinogradov, A.N.
• Format: Journal Article Conference Proceeding
• Language: English; Russian
• Published: Amsterdam Elsevier B.V 01.04.2009; Elsevier
• Subjects: Diluted magnetic semiconductor; GaMnAs; InMnAs; Spectral ellipsometry; Transversal Kerr effect; Diluted magnetic semiconductor; 33.55.b; Spectral ellipsometry; 75.50.Pp; 78.20.Ls; 78.20.Ci; Transversal Kerr effect; InMnAs; 61.72.Vv; GaMnAs
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2008.11.095

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 In 1− x (Ga 1− x )Mn x As host and MnAs inclusions.