Ultrafast spin-polarized electrical currents injected in a strained zinc blende semiconductor by single color pulses
Why this work is in the frame
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Bibliographic record
Abstract
Ultrafast ballistic electrical currents are generated through interband excitation of strained InGaAs∕GaAs quantum well samples at 295 K by 810 nm, 60 fs circularly polarized optical pulses. These currents are generated through quantum interference of optical absorption pathways associated with the orthogonally polarized components of the light field, and although the spin of the currents is not directly measured, they should also be spin polarized. The femtosecond transient currents are detected via the emitted tetrahertz (THz) radiation which has a bandwidth of ∼8THz. The THz amplitude scales linearly with injected carrier density up to ∼1018cm−3 beyond which state filling and carrier–carrier scattering cause a sublinear dependence. A peak current density of 9kA∕cm2 is obtained for a peak pump intensity of 250MW∕cm2.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 it