Concerns regarding Data Reporting Rigor and Spectral Presentation in a First-Principles Electron-Vibration Interaction Study

Academic fraud report · Geng Detector

Summary

This review examines 'First-Principles Approach to Electron-Vibration Interaction in Molecules from an Atomic Orbital Basis: The Allen−Heine−Cardona Theory and Beyond' by Qi, Shang, Ren, and Jiang, published in J. Phys. Chem. Lett. 2026, 17, 4925–4933 (DOI: 10.1021/acs.jpclett.6c00235). The overall verdict is 'Questionable but not misconduct.' Two concerns are confirmed but characterized as methodological and presentational shortcomings rather than fabrication. First, Table 1 (Page 4928) on G2/97 zero-point renormalization contains a missing entry ('-') for HCl in the 'NA-AHC, This work' column with no footnote explanation, though the authors do discuss NA-AHC divergences in the body, making a likely methodological origin plausible. Second, Figure 2 (Page 4930) compares eph-spec@G0W0 calculations to photoemission data without apparent convolution of instrumental broadening, yielding artificially sharp Lorentzian/Gaussian peaks despite rigid energy alignment only. No fabrication, image manipulation, or statistical anomalies were detected. Reference years (up to 2025) are consistent with a 2026 publication, and FHI-aims/CPSCF timeline is plausible.

Verdict

Questionable (yellow flag). Two confirmed issues concern reporting rigor and figure presentation rather than data fabrication. No evidence of academic misconduct.

Key findings

Missing data point in Table 1 (Page 4928) for HCl in the 'NA-AHC, This work' column of G2/97 ZPR values, with no footnote or explanation in the manuscript, despite the authors discussing possible NA-AHC divergence elsewhere.
Figure 2 (Page 4930) presents eph-spec@G0W0 spectral functions as sharp, unbroadened peaks against experimental PES, with only a rigid energy shift applied; no convolution with instrumental resolution or background appears to be applied.
Both issues are classified as methodological/presentational deficiencies rather than falsification.

Evidence highlights

Table 1 (Page 4928): single missing entry ('-') for HCl while all other entries in the same row and reference 51 contain specific numerical ZPR results; manuscript text and footnotes contain no explanation for the gap.
Manuscript body acknowledges that NA-AHC can become non-physical and divergent when perturbation theory breaks down, which is consistent with—but not proven to be—the cause of the missing HCl entry.
Figure 2 (Page 4930): visual inspection indicates extremely sharp Lorentzian/Gaussian-like peaks with no visible broadening; caption/methods describe rigid main-peak alignment but do not mention instrumental broadening convolution.
References include works dated 2025 (e.g., Refs. 22, 38, 61), consistent with a 2026 publication; FHI-aims/CPSCF functionality referenced as in use by 2026 is temporally plausible; no anachronistic citations detected.

Notes

Confidence: moderate for both findings, which rely on visual inspection and absence of methodological justification; the underlying data and calculations may be sound.
Limitations: no raw data or code access; the precise reason for the HCl omission cannot be verified without author clarification; the degree of (un)convolved broadening in Figure 2 cannot be quantified from the figure alone.
Recommended follow-up: optional post on PubPeer requesting a footnote explaining the HCl entry and a discussion of whether spectral broadening was applied in Figure 2. No formal referral to the journal or institutional committee is recommended based on current evidence.