Oxide muonics: A new compendium
| Autor: | E.A. Davis, R. C. Vilão, Amit Keren, Stephen J. Cox, James S. Lord, David J. Keeble, M. Charlton, D. P. van der Werf, J. Piroto Duarte, Jacob Gavartin, Robert Scheuermann, Alexey Stoykov, Stephen P. Cottrell, João Gil, H. V. Alberto |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
Hydrogen Band gap business.industry Muonium Oxide chemistry.chemical_element Hydrogen doping Condensed Matter Physics Electronic Optical and Magnetic Materials Condensed Matter::Materials Science chemistry.chemical_compound Monatomic ion Semiconductor chemistry Ionization Physics::Atomic Physics Electrical and Electronic Engineering Atomic physics business Hyperfine structure |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 0921-4526 |
| Popis: | A new survey of muonium states brings the total of binary non-magnetic oxides studied to 30, with normal muonium--the interstitially trapped atomic state--found in 15 of these. The number of shallow-donor states of the type known in ZnO now also totals 15, but there are hints of several others. Tantalizingly, the shallow-donor and deep-atomic states are found to coexist in several of the candidate high-permittivity dielectrics. Highly anisotropic states, resembling anomalous muonium in semiconductors and including examples of muonium trapped at oxygen vacancies, complete a spectrum of hyperfine parameters covering five powers of ten. Effective ionization temperatures range from 10 K for shallow to over 1000 K for deep states, with corresponding activation energies between several meV and several eV. The oxide band gap emerges as a parameter controlling the systematics of the deep-to-shallow transition for muonium and, by inference, monatomic hydrogen. http://www.sciencedirect.com/science/article/B6TVH-4HYV078-K/1/89f7584f76f4b62f6fa92e3c5a7d121b |
| Databáze: | OpenAIRE |
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