Ferromagnetic resonance studies of accumulation and diffusion of spin momentum density in Fe/Ag/Fe/GaAs(001) and Ag/Fe/GaAs(001) structures
Bibliographic record
Abstract
Spin transport was investigated in magnetic single $\text{GaAs}/16\text{ }\text{Fe}/m\text{Ag}/20\text{ }\text{Au}(001)$ and double $\text{GaAs}/16\text{ }\text{Fe}/n\text{Ag}/12\text{ }\text{Fe}/20\text{ }\text{Au}(001)$ layer structures prepared by molecular-beam epitaxy, where $m=0,5,20,1500$ and $n=20,100,300,500,1500$. The integers represent the number of Fe, Ag, and Au atomic layers, respectively. The set of Ag spacers in magnetic double layers allowed one to investigate nonlocal spin transport from ballistic to fully developed spin-diffusion limit. The spin transport in these structures was investigated using spin pumping effect at the 16Fe/Ag(001) interface. Ferromagnetic resonance (FMR) studies were carried out using standard microwave spectrometers at 9, 36, and 72 GHz. The FMR linewidth $\ensuremath{\Delta}H$ in the above structures was found to follow Gilbert damping mechanism. The measured $\ensuremath{\Delta}H$ as a function of the Ag spacer thickness in $\text{GaAs}/16\text{ }\text{Fe}/n\text{ }\text{Ag}/12\text{ }\text{Fe}/20\text{ }\text{Au}(001)$ was interpreted using Kirchhoff's laws for spin electronics which includes the spin diffusion across the Ag spacer allowing one to determine the electron charge and spin-flip time scattering parameters and the spin-diffusion length in the Ag thin-film spacers.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 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) | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".