<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi>Co</mml:mi><mml:mprescripts/><mml:none/><mml:mn>59</mml:mn></mml:mmultiscripts></mml:math>NMR Evidence for Charge Ordering below<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>T</mml:mi><mml:mi>CO</mml:mi></mml:msub><mml:mo>∼</mml:mo><mml:mn>51</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi mathvariant="normal">K</mml:mi></mml:math>in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Na</mml:mi><mml:mn>0.5</mml:mn></mml:msub><mml:msub><mml:mi>CoO</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>
Bibliographic record
Abstract
The ${\mathrm{CoO}}_{2}$ layers in ${\mathrm{Na}}_{x}{\mathrm{CoO}}_{2}$ may be viewed as a spin $S=\frac{1}{2}$ triangular-lattice doped with charge carriers. The underlying physics of the cobaltates is very similar to that of the high ${T}_{c}$ cuprates. We will present unequivocal $^{59}\mathrm{Co}$ NMR evidence that below ${T}_{\mathrm{CO}}\ensuremath{\sim}51\text{ }\text{ }\mathrm{K}$, the insulating ground state of the itinerant antiferromagnet ${\mathrm{Na}}_{0.5}{\mathrm{CoO}}_{2}$ (${T}_{N}\ensuremath{\sim}86\text{ }\text{ }\mathrm{K}$) is induced by charge ordering.
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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 | 0.003 | 0.008 |
| Meta-epidemiology (narrow) | 0.004 | 0.003 |
| Meta-epidemiology (broad) | 0.002 | 0.003 |
| Bibliometrics | 0.003 | 0.005 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.011 | 0.008 |
| Open science | 0.005 | 0.004 |
| Research integrity | 0.005 | 0.005 |
| Insufficient payload (model declined to judge) | 0.618 | 0.752 |
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".