End of aging as a probe of finite-size effects near the spin-glass transition temperature
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Bibliographic record
Abstract
We have measured the growth of the spin glass correlation length through the aging effect. Measurements were made on bulk ${\mathrm{Cu}}_{0.95}{\mathrm{Mn}}_{0.05}$ and a ${\mathrm{Cu}}_{0.88}{\mathrm{Mn}}_{0.12}$ thin film multilayer with CuMn layer thicknesses of 4.5 nm separated by 60-nm Cu layers. As the glass temperature ${T}_{g}$ is approached ($0.9{T}_{g}<T<0.96{T}_{g}$) in the bulk sample, we find that the waiting time effect (as measured by the time associated with the inflection point of the decay) as a function of increasing temperature, shifts to shorter timescales. For $T>0.96{T}_{g}$, there is no waiting time effect on the magnetization decay. In the temperature region $0.96{T}_{g}\text{--}1.00{T}_{g}$, all decays collapse onto a single decay curve indicating an end of aging even for long waiting times (${t}_{w}=10\phantom{\rule{0.16em}{0ex}}000s$). For the thin film, all effects due to the waiting time disappear at around $0.89{T}_{f}$, where ${T}_{f}$ is the freezing temperature marking the onset of irreversibility. These results are interpreted in terms of the spin glass correlation length saturating at a constant value after reaching a characteristic length scale, either the size of the crystallites in the bulk, or the thickness of the 4.5-nm film.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it