Point defects in pure amorphous silicon and their role in structural relaxation: A tight-binding molecular-dynamics study
Bibliographic record
Abstract
Structural relaxation in pure amorphous silicon $(a\text{\ensuremath{-}}\mathrm{Si})$ produced by ion implantation has been attributed to the annihilation of point defects (vacancies and interstitials) introduced during the amorphization process. We have studied this problem by using tight-binding molecular-dynamics simulations. We find that structural defects can, indeed, be identified in $a\text{\ensuremath{-}}\mathrm{Si}$--- they manifest themselves through a strong correlation between the charge and the volume of nearby atoms. The relaxation of these defects proceeds via the recombination of the dangling bonds. This results in an increase in the coordination number at constant density; the relaxation of $a\text{\ensuremath{-}}\mathrm{Si}$, therefore, results from local, rather than global, structural changes, in full agreement with the high-precision x-ray diffraction experiments of Laaziri et al. [Phys. Rev. Lett. 82, 3460 (1999)].
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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; a candidate call from one teacher head, not a consensus.
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".