Muonium diffusion dynamics in mercury oxide

• Autor(a) principal: Piroto Duarte, J.
• Data de Publicação: 2006
• Outros Autores: Gil, J. M., Alberto, H. V., Vilão, R. C., Weidinger, A., Ayres de Campos, N., Cox, S. F. J., Lord, J. S., Cottrell, S. P., Davis, E. A.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• DOI: 10.1016/j.physb.2005.11.122
• Texto Completo: http://hdl.handle.net/10316/4409; https://doi.org/10.1016/j.physb.2005.11.122
• topic: II-VI Semiconductors; Mercury oxide; Muonium diffusion

The diffusion dynamics of the neutral muonium state found in HgO is addressed in this work. We propose a hopping model for the diffusion, and use it to analyse time-domain [mu]SR data. It is found that the diffusion is an incoherent quantum process, with an activation energy of 5.2(2) meV. The analysis also points to the anti-bonding site as the best-suited candidate for the muon's localisation.