Work

Limitations of Debye-Waller lattice temperature extraction under electronic excitation

Year: 2026

Type: preprint

Abstract: Ultrafast diffraction is the cutting-edge technique to extract the atomic temperature at femtosecond timescales, and further related quantities - in particular, electron-phonon coupling strength at elevated electronic temperatures. The present work demonstrates limitations of such an analysis, emphasizing the importance of careful evaluation of the evolution of the Debye temperature. It is shown that, due to the sensitivity of the Debye-Waller analysis to this parameter, neglecting its changes under electronic excitation may lead to significant deviations of the atomic temperature extracted from its true values.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2605.15140

Authors: Medvedev, N., Kopecky, M., Chalupsky, J., Juha, L.

Institutions: Czech Academy of Sciences, Czech Academy of Sciences, Institute of Plasma Physics, FZU - Institute of Physics of the Czech Academy of Sciences

Language: English

Topic: X-ray Diffraction in Crystallography

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: European Commission

Awards: G6231593222, G6866058724, G941802975

OpenAlex ID: W7161265681

Cites: 1

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Related to: 10