A common behavior of thermoelectric layered cobaltites: an incommensurate spin density wave state
Bibliographic record
Abstract
Magnetism of misfit layered cobaltites, [Ca/sub 2/CoO/sub 3/]/sub 0.62//sup RS/[CoO/sub 2/] and [Ca/sub 2/Co/sub 4/3/Cu/sub 2/3/O/sub 4/]/sub 0.62//sup RS/[CoO/sub 2/] (RS denotes a rocksalt-type block), was investigated by a positive muon spin rotation and relaxation (/spl mu//sup +/SR) experiment. For the former cobaltite, a transition to an incommensurate (IC) spin density wave (SDW) state was found below 100 K (=T/sub SDW//sup on/) and a clear oscillation due to a static internal magnetic field was observed below 30 K (=T/sub SDW/). For the latter cobaltite, T/sub SDW//sup on/=180 K and T/sub SDW/=140 K, respectively. The wide transition width (= 40-70 K) suggested that a short-range IC-SDW order appeared below T/sub SDW//sup on/ and a long-range order completed below T/sub SDW/. Furthermore, an anisotropic behavior of the zero-field /spl mu//sup +/SR spectra on the c axis aligned samples indicated that the IC-SDW propagates in the a-b plane, with oscillating moments directed along the c axis. These results suggest that the IC-SDW exist not in the rocksalt-type block but in the CoO/sub 2/ plane.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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".