The Effect of Anisotropy on Resonant Tunnelling Spin Polarization in Type-II Heterostructures
Bibliographic record
Abstract
The effect of anisotropy on resonant tunnelling spin polarization in type-II semiconductor heterostructures is investigated within the envelope function approximation. Calculations are performed using an 8 × 8k · p matrix Hamiltonian which includes the interband coupling between electrons and holes as well as the non-parabolicity and anisotropy of the energy band structure. The polarization is due to constant applied magnetic field directed along the growth directions of samples which are grown at arbitrary angles with respect to the c[001] axes. Using spin-dependent boundary conditions and the transfer matrix method, an analytical expression for the spin polarization is obtained. Numerical calculations of the polarization reveal that it is highly sensitive to the anisotropy parameters of the model. Even under relatively weak magnetic fields polarizations of up to 75% are predicted.
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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".