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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. ISSN 0003-6951
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Official URL: http://dx.doi.org/10.1063/1.3309694
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 |
| Date: | 8 February 2010 |
| Volume: | Vol.96 |
| Number: | No.6 |
| Number of Pages: | 3 |
| Page Range: | Article: 062110 |
| Identification Number: | 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) |
| URI: | http://wrap.warwick.ac.uk/id/eprint/6432 |
Data sourced from Thomson Reuters' Web of Knowledge
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