Energy shell structure of a single InAs/GaAs quantum dot with a spin-orbit interaction
Bibliographic record
Abstract
We study the evolution of the excited-state photoluminescence of a single self-assembled quantum dot as a function of applied magnetic field in a regime where the cyclotron energy is comparable to the confinement energy. As expected, we observe the splitting of the angular-momentum states following the Fock-Darwin scheme, but we also observe that each state further splits into a doublet which shows an unexpected evolution with increasing magnetic field. This behavior cannot be explained by a simple Zeeman spin splitting but is rather consistent with the observation of spin-orbit coupling where the spin of electrons is coupled with the envelope function orbital angular momentum. We show that the addition of this type of spin-orbit coupling to the single-particle Fock-Darwin model can account for the observed dependence. By comparison of our data with such a model, we derive a spin-orbit intensity of ${[(3.9\ifmmode\pm\else\textpm\fi{}0.3)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}9}\text{ }\text{eV}\text{ }\text{cm}]}^{2}$.
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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 | 0.000 | 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) | 0.001 | 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".