Tilt-induced phase transitions in even-denominator fractional quantum Hall states at the ZnO interface
Bibliographic record
Abstract
Strongly interacting electrons in a ZnO quantum well reveal intriguing electronic properties that were not observed in traditional semiconductor systems, such as in a GaAs heterojunction. In a tilted magnetic field, the even-denominator fractional quantum Hall states in this system exhibit unique phase transitions that necessitate a proper understanding. Since here the Landau level gap is very small, it is essential to consider a screened Coulomb potential in order to include the effects of all Landau levels. We observe an incompressible state--compressible state phase transition induced by the tilted field with different properties for the $\frac{3}{2}$ and $\frac{7}{2}$ filling factors. Additionally, the disappearance of the $\frac{5}{2}$ state in the experiment is most likely due to the presence of a screened Coulomb potential. We, however, propose that a wider quantum well may help to stabilize the incompressible phase of the $\frac{5}{2}$ filling factor, and thereby make the fractional quantum Hall effect observable in this state.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.002 |
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; both teacher heads agree on what is shown here.
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".