ISIS Neutron and Muon Source Data Journal

Muonium Charge-State Transition Energies in Si-Ge Alloys

Abstract: We propose longitudinal muon spin depolarization measurements for two additional samples of Si(1-x)Ge(x) alloys in order to complete our study of the dependence of Mu(-/0) acceptor level energies on alloy composition and the T-site configuration. A sample with x=0.87 will help better determine where the T(Si2Ge2) related level crosses the valence band edge, implying that a negatively charge Mu ion will serve as the core for a shallow Mu acceptor state. We have already shown that the acceptor levels for T(Ge4) and T(Si1Ge3) are valence-band resonant above x=0.92 and x=0.80, respectively. The current data suggest the the T(Si2Ge2) level enters the band near x=0.86, thus the level for x=0.87 should lie just below the band edge. A sample with x=0.55 is important for confirmation of data suggesting that an alloy bowing parameter is needed to slightly lower the mid-range band edge.

Principal Investigator: Professor Roger Lichti
Experimenter: Miss Jingliang Miao
Experimenter: Dr P.W. Mengyan
Experimenter: Professor Alan Drew
Local Contact: Dr Stephen Cottrell

DOI: 10.5286/ISIS.E.RB1610384

ISIS Experiment Number: RB1610384

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Roger Lichti et al; (2016): Muonium Charge-State Transition Energies in Si-Ge Alloys, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1610384

Data is released under the CC-BY-4.0 license.