Suppression of hole-mediated ferromagnetism in Ga1-xMnxP by hydrogen

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Publication Type Journal Article
School or College College of Engineering
Department Materials Science & Engineering
Creator Scarpulla, Michael
Other Author Bihler, C.; Kraus, M.; Brandt, M. S.; Goennenwein, S. T. B.; Opel, M.; Farshchi, R.; Estrada, D. M.; Dubon, O. D.
Title Suppression of hole-mediated ferromagnetism in Ga1-xMnxP by hydrogen
Date 2008
Description We report the passivation of the Mn acceptors in Ga1−xMnxP upon exposure to a hydrogen plasma. The as-grown films are nonmetallic and ferromagnetic with a Curie temperature of TC=55 K. After hydrogenation the sample resistivity increases by approximately three orders of magnitude at room temperature and six orders of magnitude at 25 K. Furthermore, the hydrogenated samples are paramagnetic, which is evidenced by a magnetization curve at 5 K that is best described by a Brillouin function with g=2 and J=5/2 expected for Mn atoms in the 3d5 configuration. Upon annealing, partial depassivation and a recovery of ferromagnetism are observed. These observations unambiguously demonstrate that the ferromagnetism in Ga1−xMnxP is carrier-mediated similar to Ga1−xMnxAs.
Type Text
Publisher American Institute of Physics (AIP)
Journal Title Journal of Applied Physics
Volume 104
Issue 1
First Page 13908
DOI 10.1063/1.2952045
citatation_issn 218979
Subject Ferromagnetic semiconductors; Hydrogenation
Subject LCSH Diluted magnetic semiconductors; Holes (Electron deficiencies); Semiconductor doping; Thin films; Semiconductors -- Magnetic properties
Language eng
Bibliographic Citation Bihler, C., Kraus, M., Brandt, M. S., Goennenwein, S. T. B., Opel, M., Scarpulla, M., Farshchi, R., Estrada, D. M., & Dubon, O. D. (2008). Suppression of hole-mediated ferromagnetism in Ga1-xMnxP by hydrogen. Journal of Applied Physics, 104(1), 013908.
Rights Management (c)American Institute of Physics. The following article appeard in Bihler, C., Kraus, M., Brandt, M. S., Goennenwein, S. T. B., Opel, M., Scarpulla, M., Farshchi, R., Estrada, D. M., & Dubon, O. D., Journal of Applied Physics, 104(1), 2008 and may be found at http://dx.doi.org/10.1063/1.2952045
Format Medium application/pdf
Format Extent 330,669 bytes
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Reference URL https://collections.lib.utah.edu/ark:/87278/s6qv44s4