Influence of A-site doping and strain on the relationship between the anisotropic magneto-resistance and charge localization in films of La0.7−xPrxCa0.3MnO3 manganites
Bibliographic record
Abstract
We studied the correlation between the charge carrier localization and the anisotropic magneto-resistance (AMR) of La0.7−xPrxCa0.3MnO3 (0.00≤x≤0.35) epitaxial thin films deposited on SrTiO3 and LaAlO3 substrates. An increase in the carrier localization, as evidenced by the rise of the small polaron activation energy Ea in the paramagnetic state, has been achieved either by increasing the dopant concentration x on the A-site or by decreasing the thickness (increasing the epitaxial lattice strain) in the film. The relationship between the AMRmax (the magnitude of AMR at the maximum near the metal-insulator temperature) and Ea exhibits a trend that is independent of the thickness of the film, the substrate, and the doping concentration x. This implies that knowledge of the value of Ea measured in a film could be sufficient to accurately predict its AMRmax value.
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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 | 0.001 |
| 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".