Photoluminescence studies of isotopically enriched silicon
Bibliographic record
Abstract
Abstract In this issue's Editor's Choice, the first high resolution photoluminescence (PL) investigations of isotopically pure silicon are reported. The cover figure shows the PL spectrum of the no‐phonon transitions of an exciton bound to the neutral aluminum acceptor in 28 Si, compared with the corresponding result from natural Si. It is seen that in the isotopically purified material the lines are shifted (as indicated by the horizontal arrow) and are sharper than in natural Si. Moreover, the splitting of the A 0 ground state, as shown in the level scheme of the inset, is clearly absent in the 28 Si sample, demonstrating that this splitting results from the random isotopic composition in natural Si. The paper is an invited presentation from the 10th International Conference on Shallow Level Centers in Semiconductors (SLCS‐10) held in Warsaw, Poland, 24‐27 July 2002. This issue of phys. stat. sol. (b) contains a second paper selected as Editor's Choice, entitled “Tunable spin‐injection and magnetoconductance in a novel 2DEG‐ferromagnet structure” by Y. Jiang and M. B. A. Jalil [2].
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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 | 0.000 | 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".