Superconductivity and Field-Induced Magnetism in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow><mml:mi mathvariant="normal">P</mml:mi><mml:mi mathvariant="normal">r</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">C</mml:mi><mml:mi mathvariant="normal">e</mml:mi></mml:mrow><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">C</mml:mi><mml:mi mathvariant="normal">u</mml:mi><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mn>4</mml:mn></mml:msub></mml:math>Single Crystals
Bibliographic record
Abstract
We report muon-spin rotation and relaxation ($\ensuremath{\mu}\mathrm{S}\mathrm{R}$) measurements on single crystals of the electron-doped high-${T}_{c}$ superconductor ${\mathrm{P}\mathrm{r}}_{2\ensuremath{-}x}{\mathrm{C}\mathrm{e}}_{x}{\mathrm{C}\mathrm{u}\mathrm{O}}_{4}$. In a zero external magnetic field, superconductivity is found to coexist with dilute Cu spins that are static on the $\ensuremath{\mu}\mathrm{S}\mathrm{R}$ time scale. In an applied field, we observe a ${\ensuremath{\mu}}^{+}$-Knight shift that is primarily due to the magnetic moment induced on the Pr ions. Below the superconducting transition temperature ${T}_{c}$, an additional source of local magnetic field appears throughout the volume of the sample. This finding is shown to be consistent with field-induced antiferromagnetic ordering of the Cu spins. Measurements of the temperature dependence of the in-plane magnetic penetration depth ${\ensuremath{\lambda}}_{ab}$ in the vortex state are also presented.
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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 | 0.009 | 0.005 |
| Meta-epidemiology (narrow) | 0.004 | 0.010 |
| Meta-epidemiology (broad) | 0.002 | 0.008 |
| Bibliometrics | 0.003 | 0.006 |
| Science and technology studies | 0.007 | 0.006 |
| Scholarly communication | 0.008 | 0.011 |
| Open science | 0.010 | 0.009 |
| Research integrity | 0.008 | 0.009 |
| Insufficient payload (model declined to judge) | 0.915 | 0.008 |
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".