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Observation of shallow-donor muonium in Ga2O3: evidence for hydrogen-induced conductivity

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King, P. D. C., McKenzie, I. and Veal, T. D. (Tim D.) (2010) Observation of shallow-donor muonium in Ga2O3: evidence for hydrogen-induced conductivity. Applied Physics Letters, Vol.96 (No.6). Article: 062110. doi:10.1063/1.3309694

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Official URL: http://dx.doi.org/10.1063/1.3309694

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Abstract

The electrical nature of muonium in the transparent conducting oxide material Ga2O3 is investigated via muon-spin rotation and relaxation spectroscopy. It is found to be a shallow donor, with an effective donor depth of 15 < E-D < 30 meV and a hyperfine splitting of 0.13 +/- 0.01 MHz. This is in contrast to the deep level observed in the majority of semiconductors but supports the recent suggestion that muonium should be a shallow donor across the class of transparent conducting oxides. These observations suggest that hydrogen will also be a shallow donor in Ga2O3, with important implications both for unintentional conductivity and deliberate n-type doping of this material.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Applied Physics Letters
Publisher: American Institute of Physics
ISSN: 0003-6951
Official Date: 8 February 2010
Dates:
DateEvent
8 February 2010Published
Volume: Vol.96
Number: No.6
Number of Pages: 3
Page Range: Article: 062110
DOI: 10.1063/1.3309694
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Engineering and Physical Sciences Research Council (EPSRC), Science and Technology Facilities Council (Great Britain) (STFC)
Grant number: EP/G004447/1 (EPSRC)

Data sourced from Thomson Reuters' Web of Knowledge

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