Acceptor identification using magnetophotoluminescence of bound exciton states in InSb
Bibliographic record
Abstract
Photoluminescence measurements were performed on Czochralski-grown indium antimonide samples in magnetic fields up to 7 T using a cryogenically cooled interferometer. Principal acceptor bound exciton luminescence and corresponding two-hole transitions (THT) were observed for both p-type and n-type samples. THT corresponding to the ${2S}_{3/2}$ excited states of the acceptor were observed in Cd-doped and Ge-doped InSb samples, and the photoluminescence of the two acceptors can be distinctly resolved with a separation of $1.6{\mathrm{cm}}^{\ensuremath{-}1}$ at 1 T. For magnetic fields above 1 T, excitations to the ${2P}_{5/2}$ and ${3S}_{3/2}$ states were also observed. The Zeeman splittings for all of the THT were mapped as a function of magnetic field, and zero-field energies for the acceptor excited states ${2S}_{3/2}({\ensuremath{\Gamma}}_{8}),$ ${3S}_{3/2}({\ensuremath{\Gamma}}_{8}),$ ${2P}_{5/2}({\ensuremath{\Gamma}}_{8}),$ and ${2P}_{5/2}({\ensuremath{\Gamma}}_{7})$ were measured for both the Ge and Cd acceptors. Using the energy separation of the principal bound exciton luminescence and the THT luminescence from the ${2P}_{5/2}({\ensuremath{\Gamma}}_{7})$ excited state along with the theoretically calculated binding energy for the ${2P}_{5/2}({\ensuremath{\Gamma}}_{7})$ state, acceptor binding energies of 79.2 and $80.5{\mathrm{cm}}^{\ensuremath{-}1}$ were established for Ge and Cd, respectively. The THT for the ${2S}_{3/2}({\ensuremath{\Gamma}}_{8})$ excited state of a third, unidentified acceptor ${(A}_{3})$ were observed, and a binding energy of $106.9{\mathrm{cm}}^{\ensuremath{-}1}$ was determined.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".