Self-induced Shapiro effect in semiconductor superlattices
Bibliographic record
Abstract
Summary form only given. In the last decades, a number of macroscopic quantum effects in solids have been investigated. Among those are the Josephson effect in weakly coupled superconductors and Bloch oscillations in semiconductor superlattices (SLs). The key effect of both phenomena is the generation of an AC effect by the application of a DC electric field to the system. For Bloch oscillations (BO), the periodic motion is due to Bragg reflection of electrons in a periodic potential when a constant bias field is applied across the structure. Josephson effect and Bloch oscillations show interesting extensions when both DC and AC voltages are applied. The current across the junction of two superconductors shows resonances (the so-called Shapiro steps) which appear at voltages which are multiples of the photon energy of the AC field. Similar resonances for the incoherent (phase-independent) current in a semiconductor SL have been observed in a SL under THz illumination. We here observe a novel coherent Shapiro current in semiconductor superlattices.
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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) | 0.010 | 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".