<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mtext>A</mml:mtext><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>75</mml:mn></mml:mrow></mml:mmultiscripts><mml:mtext>s</mml:mtext></mml:mrow></mml:math>NMR study of single crystals of the heavily overdoped pnictide superconductors<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Ba</mml:mtext></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mtext>K</mml:mtext><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mrow><mml:mtext>Fe</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mtext>As</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>x</mml:mi><mml:mo>=</mml:mo><mml:mn>0.7</mml:mn></mml:mrow></mml:math>and 1)
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
We performed $^{75}\text{A}\text{s}$ NMR studies on two overdoped high-quality ${\text{Ba}}_{1\ensuremath{-}x}{\text{K}}_{x}{\text{Fe}}_{2}{\text{As}}_{2}$ ($x=0.7$ and 1.0) single crystals. In the normal states, we found a dramatic increase in the spin-lattice relaxation $(1/{^{75}T}_{1})$ from the $x=0.7$ to the $x=1.0$ samples. In ${\text{KFe}}_{2}{\text{As}}_{2}$, the ratio of $1/{^{75}T}_{1}T{K}_{n}^{2}$, where ${^{75}K}_{n}$ is the Knight shift, increases as temperature drops. These results indicate the existence of another type of spin fluctuations in ${\text{KFe}}_{2}{\text{As}}_{2}$ which is accustomed to being treated as a simple Fermi liquid. In the superconducting state, the temperature scalings of $1/{^{75}T}_{1}$ below ${T}_{c}$ in the overdoped samples are significantly different from those in the under or optimally doped ones. A power-law scaling behavior $1/{^{75}T}_{1}T\ensuremath{\sim}{T}^{0.5}$ is observed, which indicates universal strong low-energy excitations in the overdoped hole-type superconductors.
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 | 0.014 | 0.016 |
| Meta-epidemiology (narrow) | 0.007 | 0.015 |
| Meta-epidemiology (broad) | 0.003 | 0.014 |
| Bibliometrics | 0.005 | 0.010 |
| Science and technology studies | 0.011 | 0.016 |
| Scholarly communication | 0.011 | 0.012 |
| Open science | 0.018 | 0.017 |
| Research integrity | 0.015 | 0.014 |
| Insufficient payload (model declined to judge) | 0.816 | 0.015 |
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