Muonium Analog of Hydrogen Passivation: Observation of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>Mu</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mi>−</mml:mi><mml:mrow><mml:msup><mml:mrow><mml:mi>Zn</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>Reaction in GaAs
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Bibliographic record
Abstract
We report direct detection of the formation and subsequent breakup of a complex containing positively charged muonium ( ${\mathrm{Mu}}^{+}$) and a substitutional ${\mathrm{Zn}}_{\mathrm{Ga}}$ acceptor in heavily doped $p$-type GaAs:Zn. ${\mathrm{Mu}}^{+}$ diffuses above 200 K with a hop rate $\ensuremath{\nu}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}{\ensuremath{\nu}}_{0}{e}^{{\ensuremath{-}E}_{\ensuremath{\nu}}{/k}_{B}T}$ where ${\ensuremath{\nu}}_{0}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}(7.7\ifmmode\pm\else\textpm\fi{}2.0)\ifmmode\times\else\texttimes\fi{}{10}^{8}{\mathrm{s}}^{\ensuremath{-}1}$ and ${E}_{\ensuremath{\nu}}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.15(4)\mathrm{eV}$. Above 350 K, it forms the complex with a trapping radius of $500\ifmmode\pm\else\textpm\fi{}200\AA{}$. The Mu-Zn complex breaks up above 550 K with a dissociation energy of 0.88(7) eV and prefactor of $(5\ifmmode\pm\else\textpm\fi{}4)\ifmmode\times\else\texttimes\fi{}{10}^{12}{\mathrm{s}}^{\ensuremath{-}1}$. Above 750 K, the cyclic reaction ${\mathrm{Mu}}^{+}\ensuremath{\leftrightarrow}{\mathrm{Mu}}^{0}$ takes place.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.003 |
| Meta-epidemiology (narrow) | 0.002 | 0.004 |
| Meta-epidemiology (broad) | 0.001 | 0.006 |
| Bibliometrics | 0.001 | 0.004 |
| Science and technology studies | 0.003 | 0.003 |
| Scholarly communication | 0.002 | 0.004 |
| Open science | 0.005 | 0.003 |
| Research integrity | 0.004 | 0.005 |
| Insufficient payload (model declined to judge) | 0.709 | 0.004 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it