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Title: | The muonium donor in rutile TiO2 and comparison with hydrogen | Authors: | Vilão, R. C. Vieira, R. B. L. Alberto, H. V. Gil, J. M. Weidinger, A. Lichti, R. L. Baker, B. B. Mengyan, P. W. Lord, J. S. |
Issue Date: | Aug-2015 | Publisher: | American Physical Society | Project: | PEstOE/FIS/UI0036/2014 info:eu-repo/grantAgreement/FCT/5876-PPCDTI/102722/PT/Interstitial hydrogen and point defects in high-permittivity oxides info:eu-repo/grantAgreement/FCT/SFRH/SFRH/BD/87343/2012/PT info:eu-repo/grantAgreement/EC/FP7/283883/EU/Neutron Scattering and Muon Spectroscopy Integrated Initiative |
Serial title, monograph or event: | Physical Review B | Volume: | 92 | Issue: | 8 | Abstract: | Muonium, a positive muon and an electron, is often used as an experimentally accessible substitute for hydrogen in materials research. In semiconductors and insulators, a large amount of information on the hydrogen behavior is deduced from this analogy; however, it is seldom demonstrated that this procedure is justified. We show here, via a comparison of the hyperfine interactions, that in TiO2 muonium and hydrogen form the same configuration with the same basic electronic structure. A detailed description of the bonding characteristics of the muon to the Ti3+ polaron is presented. The special role of muon motion within the so-called oxygen channel in the rutile structure, which occurs at a lower temperature than for hydrogen, is emphasized. | URI: | https://hdl.handle.net/10316/43144 | DOI: | 10.1103/PhysRevB.92.081202 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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