Magneto-Optical Evidence for Intrinsic Ferromagnetism in (Ga,Mn)As Layers Grown by Pulsed Laser Deposition

Elena A. Gan’shina; L.L. Golik; Z.E. Kun’kova; Vitaly I. Kovalev; Yury V. Markin; Andrey I. Novikov; Georgy S. Zykov; Yury A. Danilov; Alexei V. Kudrin; O.V. Vikhrova; B.N. Zvonkov

doi:10.4028/www.scientific.net/SSP.233-234.101

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HomeSolid State PhenomenaSolid State Phenomena Vols. 233-234Magneto-Optical Evidence for Intrinsic...

Magneto-Optical Evidence for Intrinsic Ferromagnetism in (Ga,Mn)As Layers Grown by Pulsed Laser Deposition

Abstract:

GaMnAs layers fabricated on GaAs(001) substrates by laser ablation technique were studied using the magneto-optical transversal Kerr effect (TKE) (E = 0.5 - 4.0 eV) and spectral ellipsometry (E = 1.4 - 4.5 eV). Obtained spectral, temperature and magnetic field TKE dependences shown that the used technique allowed us to obtain ferromagnetic (Ga,Mn)As layers, whose composition was close to single-phase one (without MnAs inclusions). Spectral dependences of the off-diagonal components (e’ = e’₁ - ie’₂) of the permittivity tensor and also of the magnetic circular dichroism (MCD) were calculated for ferromagnetic (Ga,Mn)As sample. The calculated dependences were compared with the published magneto-optical spectra of (Ga,Mn)As layers grown by molecular beam epitaxy.

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Periodical:

Solid State Phenomena (Volumes 233-234)

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101-104

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.233-234.101

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Online since:

July 2015

Authors:

Elena A. Gan’shina, L.L. Golik, Z.E. Kun’kova*, Vitaly I. Kovalev, Yury V. Markin, Andrey I. Novikov, Georgy S. Zykov, Yury A. Danilov, Alexei V. Kudrin, O.V. Vikhrova, B.N. Zvonkov

Keywords:

(Ga,Mn)As, Magnetic Circular Dichroism, Magneto-Optical Transversal Kerr Effect, Pulsed-Laser Deposition, Spectral Ellipsometry

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