Compositional tuning of ferromagnetism in Ga1-xMnxP

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Publication Type Manuscript
School or College College of Engineering
Department Materials Science & Engineering
Creator Scarpulla, Michael
Other Author Farshchi, R.; Stone, P. R.; Yu, K. M.; Sharp, I. D.; Beeman, J. W.; Silvestri, H. H.; Reichertz, L. A.; Haller, E. E.; Dubon, O. D.
Title Compositional tuning of ferromagnetism in Ga1-xMnxP
Date 2006-12
Description We report the magnetic and transport properties of Ga1-xMnxP synthesized via ion implantation followed by pulsed laser melting over a range of x, namely 0.018 to 0.042. Like Ga1-xMnxAs, Ga1-xMnxP displays a monotonic increase of the ferromagnetic Curie temperature with x associated with the hole-mediated ferromagnetic phase while thermal annealing above 300 ºC leads to a quenching of ferromagnetism that is accompanied by a reduction of the substitutional fraction of Mn. However, contrary to observations in Ga1- xMnxAs, Ga1-xMnxP is non-metallic over the entire composition range. At the lower temperatures over which the films are ferromagnetic, hole transport occurs via hopping conduction in a Mn-derived band; at higher temperatures it arises from holes in the valence band which are thermally excited across an energy gap that shrinks with x.
Type Text
Publisher Elsevier
Journal Title Solid State Communications
Volume 140
Issue 10-Sep
First Page 443
Last Page 446
DOI 10.1016/j.ssc.2006.09.010
citatation_issn 381098
Subject Gallium arsenide; Ferromagnetic semiconductors
Subject LCSH Semiconductors -- Magnetic properties; Transport theory; Holes (Electron deficiencies); Semiconductor doping; Ion implantation; Spintronics
Language eng
Bibliographic Citation Farshchi, R., Scarpulla, M., Stone, P. R., Yu, K. M., Sharp, I. D., Beeman, J. W., Silvestri, H. H., Reichertz, L. A., Haller, E. E., & Dubon, O. D. (2006). Compositional tuning of ferromagnetism in Ga1-xMnxP. Solid State Communications, 140(9-10), 443-6.
Rights Management (c) Elsevier
Format Medium application/pdf
Format Extent 1,277,461 bytes
Identifier ir-main,12260
ARK ark:/87278/s6bc4gms
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 702237
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