Quasimetallic behavior of carrier-polarized<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi mathvariant="normal">C</mml:mi><mml:mn>60</mml:mn></mml:msub></mml:math>molecular layers: Experiment and theory
Bibliographic record
Abstract
Although ${\mathrm{C}}_{60}$ is an insulator with a band gap ${E}_{g}$ of $\ensuremath{\sim}2.5\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$, we show experimentally and theoretically that ${E}_{g}$ is strongly affected by image forces and injected charges. In sharp contrast to the Coulomb blockade typical of quantum dots, ${E}_{g}$ is reduced by Coulomb effects. The conductance of a micron-sized ${\mathrm{C}}_{60}$ film sandwiched between metal (Al, Ag, Au, Mg, and Pt) contacts is investigated. Excellent Ohmic conductance holds for ${\mathrm{C}}_{60}$ layers at room temperature, on using $\mathrm{Al}∕\mathrm{Li}\mathrm{F}$ bilayer contacts. Arrhenius type activated conductivity with an activation gap of $\ensuremath{\sim}0.16\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$ is found.
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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 | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 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".