Phase Separation in GaMnAs Layers Grown by Laser Pulsed Deposition
| Autor: | L.L. Golik, O. V. Vikhrova, E. A. Gan’shina, V. I. Kovalev, G. S. Zykov, Yu. V. Markin, Z. E. Kun’kova, B. N. Zvonkov, Yu. A. Danilov, A. V. Kudrin |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Kerr effect Condensed matter physics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Pulsed laser deposition Condensed Matter::Materials Science Paramagnetism Ferromagnetism Ellipsometry Hall effect Electrical resistivity and conductivity 0103 physical sciences 010306 general physics Spectroscopy |
| Zdroj: | Physics of the Solid State. 60:943-949 |
| ISSN: | 1090-6460 1063-7834 |
| Popis: | GaMnAs layers grown by pulsed laser deposition were studied by magneto-optical transversal Kerr effect spectroscopy, spectral ellipsometry, resistivity and the Hall effect measurements, and magnetometry. The growth regimes for magnetically inhomogeneous layers containing Mn-enriched ferromagnetic regions with different composition and sizes were established. The layers grown at a temperature of 300°C exhibit a ferromagnetic behavior at temperatures below 80 K, which is conditioned by the presence of local ferromagnetic (Ga,Mn)As regions in the paramagnetic matrix. The nature of peculiarities in the TKE spectrum of these layers is discussed. |
| Databáze: | OpenAIRE |
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