Muonium acceptor states in high GeSi1-xGex alloys

BR Carroll, RL Lichti, PJC King, YG Celebi… - Physica B: Condensed …, 2009 - Elsevier
Muon spin rotation and resonance studies of Czochralski-grown silicon germanium alloys
with high Ge content have determined muonium (Mu) donor and acceptor energy levels.
High-TF and RF μSR measurements on 90% and 84% Ge content SiGe alloys show Mu
acceptor energy levels of 13.5±5.2 and 77±12meV, respectively, as well as a split
tetrahedral Mu hyperfine signal. In addition to observing two MuT states in these samples,
we see in Si0. 16Ge0. 84 a possible shallow acceptor signal in our transverse field data as a …