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 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) | 0.002 | 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".