Comparison of the Mid-Infrared Magneto-Optical Response of Ga1−x Mn x As Films Grown by Molecular Beam Epitaxy and Ion Implantation and Pulsed Laser Melting
| Autor: | Michael A. Scarpulla, Oscar D. Dubon, J. Cerne, Vít Novák, Jairo Sinova, G. Acbas, M. Cukr |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Band gap Analytical chemistry Infrared spectroscopy Magnetic semiconductor Condensed Matter Physics Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Ion implantation Nuclear magnetic resonance Ferromagnetism Impurity Inertial confinement fusion Molecular beam epitaxy |
| Zdroj: | Journal of Superconductivity and Novel Magnetism. 20:457-460 |
| ISSN: | 1557-1947 1557-1939 |
| DOI: | 10.1007/s10948-007-0246-3 |
| Popis: | We have carried out mid-infrared magneto-optical studies of Ga1−x Mn x As films grown using two different techniques: low temperature molecular beam epitaxy (LT-MBE) and a combination of ion-implantation and pulsed laser melting (II-PLM). The second method is a high temperature growth technique which minimizes the formation of Mn interstitials. Both samples exhibit a ferromagnetic response with similar Curie temperatures (T C). The samples show qualitatively similar behavior in below bandgap Faraday and Kerr measurements, which probe the valence band structure of the materials. This suggests that the same mid-infrared transitions are dominating the magneto-optical response of both samples. |
| Databáze: | OpenAIRE |
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