Static and dynamic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>X</mml:mi><mml:mi>Y</mml:mi></mml:mrow></mml:math>-like short-range order in a frustrated magnet with exchange disorder
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
A single crystal of the ${\mathrm{Co}}^{2+}\text{\ensuremath{-}}\mathrm{based}$ pyrochlore ${\mathrm{NaCaCo}}_{2}{\mathrm{F}}_{7}$ was studied by inelastic neutron scattering. This frustrated magnet with quenched exchange disorder remains in a strongly correlated paramagnetic state down to 1/60th of the Curie-Weiss temperature. Below ${T}_{f}=2.4$ K, diffuse elastic scattering develops and comprises $30\ifmmode\pm\else\textpm\fi{}10\phantom{\rule{0.16em}{0ex}}%$ of the total magnetic scattering, as expected for ${J}_{\text{eff}}=1/2$ moments frozen on a time scale that exceeds $\ensuremath{\hbar}/\ensuremath{\delta}E=3.8$ ps. The diffuse scattering is consistent with short range $XY$ antiferromagnetism with a correlation length of 16 \AA{}. The momentum $(\mathbit{Q})$ dependence of the inelastic intensity indicates relaxing $XY$-like antiferromagnetic clusters at energies below $\ensuremath{\sim}5.5$ meV, and collinear antiferromagnetic fluctuations above this energy. The relevant $XY$ configurations form a continuous manifold of symmetry-related states. Contrary to well-known models that produce this continuous manifold, order-by-disorder does not select an ordered state in ${\mathrm{NaCaCo}}_{2}{\mathrm{F}}_{7}$ despite evidence for weak $(\ensuremath{\sim}12%)$ exchange disorder. Instead, ${\mathrm{NaCaCo}}_{2}{\mathrm{F}}_{7}$ freezes into short range ordered clusters that span this manifold.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.009 | 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 it