dc.contributor.author | de Boer, Tristan | |
dc.date.accessioned | 2011-09-07T17:34:47Z | |
dc.date.available | 2011-09-07T17:34:47Z | |
dc.date.issued | 2011-09-07 | |
dc.identifier.uri | http://hdl.handle.net/10222/14253 | |
dc.description | Spectrally-resolved differential reflectivity experiments on GaMnAs over a broad spectral range (1.4-2.0 eV) are presented, representing the first such measurements in a III-Mn-V diluted magnetic semiconductor. Comparison of the measured nonlinear spectra with results in GaAs and LT-GaAs, together with calculations of the pump probe signal contributions, has allowed an unambiguous identification of the relevant scattering and relaxation processes for optically-excited carriers in this material system. The measured spectra indicate a clear blue shift in the nonlinear optical response, providing support for the valence band model of ferromagnetism in III-Mn-V diluted magnetic semiconductors. | en_US |
dc.description.abstract | Spectrally-resolved differential reflectivity experiments on GaMnAs over a broad spectral range (1.4-2.0 eV) are presented, representing the first such measurements in a III-Mn-V diluted magnetic semiconductor. Comparison of the measured nonlinear spectra with results in GaAs and LT-GaAs, together with calculations of the pump probe signal contributions, has allowed an unambiguous identification of the relevant scattering and relaxation processes for optically-excited carriers in this material system. The measured spectra indicate a clear blue shift in the nonlinear optical response, providing support for the valence band model of ferromagnetism in III-Mn-V diluted magnetic semiconductors. | en_US |
dc.language.iso | en | en_US |
dc.subject | Differential Reflection | en_US |
dc.subject | dilute magnetic semiconductor | en_US |
dc.subject | diluted magnetic semiconductor | en_US |
dc.subject | dynamics | en_US |
dc.subject | ferromagnetism | en_US |
dc.subject | GaAs | en_US |
dc.subject | GaMnAs | en_US |
dc.subject | semiconductor | en_US |
dc.subject | carrier dynamics | en_US |
dc.subject | Ultrafast Spectroscopy | en_US |
dc.title | Spectrally-Resolved Differential Reflectivity Response of GaMnAs | en_US |
dc.date.defence | 2011-08-26 | |
dc.contributor.department | Department of Physics & Atmospheric Science | en_US |
dc.contributor.degree | Master of Science | en_US |
dc.contributor.external-examiner | Not Applicable | en_US |
dc.contributor.graduate-coordinator | Randall Martin | en_US |
dc.contributor.thesis-reader | Theodore Monchesky | en_US |
dc.contributor.thesis-reader | Jordan Kyriakidis | en_US |
dc.contributor.thesis-supervisor | Kimberley Hall | en_US |
dc.contributor.ethics-approval | Not Applicable | en_US |
dc.contributor.manuscripts | Not Applicable | en_US |
dc.contributor.copyright-release | Not Applicable | en_US |