Orbital excitation in Sr 2 CuO 2 Cl 2 resonant inelastic x-ray scattering at the Cu K pre-edge
Bibliographic record
Abstract
We report resonant inelastic x-ray scattering (RIXS) study of $d\text{\ensuremath{-}}d$ orbital excitations in ${\text{Sr}}_{2}{\text{CuO}}_{2}{\text{Cl}}_{2}$ utilizing the intermediate state associated with a quadrupole transition. Fourfold azimuthal angle dependence of the pre-edge peak near the $\text{Cu}\text{ }K$ absorption edge confirms that the in-plane pre-edge peak arises from the $1s\ensuremath{\rightarrow}3{d}_{{x}^{2}\ensuremath{-}{y}^{2}}$ electric quadrupole transition. When the incident photon energy is tuned to this transition, we observed a RIXS excitation at 2 eV energy loss. This excitation is associated with the $d\text{\ensuremath{-}}d$ excitation of ${d}_{{x}^{2}\ensuremath{-}{y}^{2}}\ensuremath{\rightarrow}{d}_{yz,zx}$ based on the angular dependence of the quadrupole transition-matrix element of the scattered photon.
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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 | 0.001 | 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) | 0.002 | 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 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".