Anisotropic Effect of Cd and Hg Doping on the Pauli Limited Superconductor<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>CeCoIn</mml:mi><mml:mn>5</mml:mn></mml:msub></mml:math>
Bibliographic record
Abstract
We studied the effect of impurity on the first order superconducting (SC) transition and the high field-low temperature (HFLT) SC state of ${\mathrm{CeCoIn}}_{5}$ by measuring the specific heat of $\mathrm{CeCo}({\mathrm{In}}_{1\ensuremath{-}x}{\mathrm{Cd}}_{x}{)}_{5}$ with $x=0.0011$, 0.0022, and 0.0033 and $\mathrm{CeCo}({\mathrm{In}}_{1\ensuremath{-}x}{\mathrm{Hg}}_{x}{)}_{5}$ with $x=0.000\text{ }16$, 0.000 32, and 0.000 48 at temperatures down to 0.1 K and fields up to 14 T. Cd substitution rapidly suppresses the crossover temperature ${T}_{0}$, where the SC transition changes from second to first order, to $T=0\text{ }\text{ }\mathrm{K}$ with $x=0.0022$ for $H\ensuremath{\parallel}[100]$, while it remains roughly constant up to $x=0.0033$ for $H\ensuremath{\parallel}[001]$. The associated anomaly of the proposed FFLO state in Hg-doped samples is washed out by $x=0.000\text{ }48$, while remaining at the same temperature, indicating high sensitivity of that state to impurities. We interpret these results as supporting the nonmagnetic, possibly FFLO, origin of the HFLT state in ${\mathrm{CeCoIn}}_{5}$.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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".