Geometric limits of coherent III-V core/shell nanowires
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Bibliographic record
Abstract
We demonstrate the application of a simple equilibrium model based on elasticity theory to estimate the geometric limits of dislocation-free core/shell nanowires (NWs). According to these calculations, in a coherent core/shell structure, tangential strain is the dominant component in the shell region and it decreases quickly away from the heterointerface, while axial strain is the dominant component in the core and is independent of the radial position. These strain distributions energetically favour the initial relief of axial strain in agreement with the experimental appearance of only edge dislocations with line directions perpendicular to the NW growth axis at the core/shell interfaces. Such dislocations were observed for wurtzite InAs/InP and zincblende GaAs/GaP core/shell NWs with dimensions above the coherency limits predicted by the model. Good agreement of the model was also found for experimental results previously reported for GaAs/InAs and GaAs/GaSb core/shell NWs.
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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 | 0.000 | 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 it