Muonium as a shallow center in GaN

A paramagnetic muonium (Mu) state with an extremely small hyperfine parameter was observed for the first time in single-crystalline GaN below 25 K. It has a highly anisotropic hyperfine structure with axial symmetry along the direction, suggesting that it is located either at a nitrogen-antibonding...

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Bibliographic Details
Published in:Physical review letters 2004-04, Vol.92 (13), p.135505-135505, Article 135505
Main Authors: Shimomura, K, Kadono, R, Ohishi, K, Mizuta, M, Saito, M, Chow, K H, Hitti, B, Lichti, R L
Format: Article
Language:English
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Summary:A paramagnetic muonium (Mu) state with an extremely small hyperfine parameter was observed for the first time in single-crystalline GaN below 25 K. It has a highly anisotropic hyperfine structure with axial symmetry along the direction, suggesting that it is located either at a nitrogen-antibonding or a bond-centered site oriented parallel to the c axis. Its small ionization energy (
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.92.135505