Electronic stabilization of a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>5</mml:mn><mml:mo>×</mml:mo><mml:mn>4</mml:mn></mml:mrow></mml:math>dopant superlattice on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Si</mml:mi><mml:mrow><mml:mo>(</mml:mo><mml:mn>111</mml:mn><mml:mo>)</mml:mo></mml:mrow><mml:mn>5</mml:mn><mml:mo>×</mml:mo><mml:mn>2</mml:mn><mml:mtext>−</mml:mtext><mml:mi mathvariant="normal">Au</mml:mi></mml:mrow></mml:math>
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
The $\mathrm{Si}(111)5\ifmmode\times\else\texttimes\fi{}2\text{\ensuremath{-}}\mathrm{Au}$ surface exhibits a chain structure with additional Si atoms on top of the chains. They dope the chains to achieve the optimum band filling, according to recent local density calculations. Surprisingly, the Si atoms form a half-filled, disordered $5\ifmmode\times\else\texttimes\fi{}4$ lattice fluid, not an ordered $5\ifmmode\times\else\texttimes\fi{}8$ lattice. From their autocorrelation function an interatomic potential with $5\ifmmode\times\else\texttimes\fi{}4$ periodicity was deduced. An explanation for the $5\ifmmode\times\else\texttimes\fi{}4$ periodicity is provided by establishing a connection to the electronic structure near the Fermi level ${E}_{F}$, which is mapped by angle-resolved photoemission. The constant energy surfaces near ${E}_{F}$ consist of one-dimensional lines at the boundaries of a $5\ifmmode\times\else\texttimes\fi{}4$ Brillouin zone. Such nested features of high density of states are capable of triggering a $5\ifmmode\times\else\texttimes\fi{}4$ superlattice interaction. The measurements establish a two-way connection between electronic structure and interatomic potentials: A one-dimensional Fermi surface instability triggers a superlattice of extra atoms, and the atoms provide the correct number of electrons for such an instability to occur. The band structure is discussed in view of the recently observed phase-separation into nanometer-sized segments of metallic and semiconducting character.
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 | 0.008 | 0.005 |
| Meta-epidemiology (narrow) | 0.005 | 0.009 |
| Meta-epidemiology (broad) | 0.002 | 0.010 |
| Bibliometrics | 0.002 | 0.006 |
| Science and technology studies | 0.007 | 0.006 |
| Scholarly communication | 0.006 | 0.007 |
| Open science | 0.010 | 0.008 |
| Research integrity | 0.007 | 0.009 |
| Insufficient payload (model declined to judge) | 0.192 | 0.013 |
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