Distorted iron films on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">GaAs</mml:mi><mml:mo>(</mml:mo><mml:mn>001</mml:mn><mml:mo>)</mml:mo><mml:mo>−</mml:mo><mml:mo>(</mml:mo><mml:mn>4</mml:mn><mml:mn/><mml:mo>×</mml:mo><mml:mn>6</mml:mn><mml:mo>)</mml:mo></mml:math>
Bibliographic record
Abstract
Polarized K-edge x-ray absorption fine structure spectroscopy (XAFS) studies were performed both in and ex situ on iron films deposited on GaAs substrates. Samples with 5 and 10 ML (monolayers) of iron deposited on sulfur-passivated and $(4\ifmmode\times\else\texttimes\fi{}6)$-reconstructed GaAs(001) surfaces, respectively, were studied ex situ (capped with 20 ML of gold) and compared with 9.3 ML on $\mathrm{GaAs}(001)\ensuremath{-}(4\ifmmode\times\else\texttimes\fi{}6)$ measured in situ. Analysis of XAFS spectra for both samples on $(4\ifmmode\times\else\texttimes\fi{}6)\ensuremath{-}\mathrm{GaAs}$ reveals a tetragonal distortion of the iron film relative to bulk body-centered-cubic iron. The distortion involves an in-plane contraction and an expansion perpendicular to the GaAs surface to give a $c/a$ ratio of 1.03(1), with a comparable to half the bulk lattice constant of GaAs. The sample on sulfur-passivated GaAs did not exhibit this distortion.
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How this classification was reachedexpand
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 | 0.006 | 0.003 |
| Meta-epidemiology (narrow) | 0.006 | 0.009 |
| Meta-epidemiology (broad) | 0.004 | 0.009 |
| Bibliometrics | 0.002 | 0.004 |
| Science and technology studies | 0.006 | 0.007 |
| Scholarly communication | 0.006 | 0.005 |
| Open science | 0.010 | 0.007 |
| Research integrity | 0.007 | 0.009 |
| Insufficient payload (model declined to judge) | 0.065 | 0.030 |
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 itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".