Electronic Band Gap Reduction in Manganese Carbodiimide: MnNCN
Bibliographic record
Abstract
The newly synthesized manganese carbodiimide is antiferromagnetic, green in color, and optically transparent. The electronic properties of MnNCN are relatively unstudied; determining the electronic band gap and understanding the effects of the O 2– → NCN 2– substitution is extremely important to use this material for practical applications. We present high-resolution measurements of the local density of electronic states of MnNCN and compare them to spectra simulated using detailed density functional theory calculations. We further show that MnNCN has a larger degree of covalent bonding than MnO and has a reduced indirect electronic band gap of 3.40 ± 0.20 eV of the charge-transfer type. However, the mechanism for this band gap reduction is not clear and requires further study. In conclusion, MnNCN is a wide band gap, antiferromagnetic semiconductor suitable for applications that currently use MnO but require a smaller electronic band gap.
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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) | 0.000 | 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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".