Real-Space Dynamic Electron Correlation in Beryllium

2026/01/28 by Rudra B. Bista, Yuya Shinohara, Wojciech Dmowski +6 · 1 voice
Physics and Astronomy · #cond-mat.other

paper · pdf · doi:10.1103/vzrc-5m39

arxiv published 2026/01/28 · arxiv updated 2026/06/30

Abstract

Electron correlation in solid has a major impact on material properties. However, it has been studied mainly by theory, with very limited direct experimental investigations. Here, we demonstrate that dynamic electron correlation function can be experimentally measured using inelastic X-ray scattering on polycrystalline beryllium. The data are expressed as the energy-resolved dynamic pair-distribution function. Our results confirm the size of the exchange-correlation hole as ~2 Å, consistent with theoretical expectations. However, at the plasmon energy of ~21 eV, the exchange-correlation hole is extended up to 4-5 Å, suggesting a unique influence of the dynamic plasmon state.

Citations

• An On-Demand Coherent Single Electron Source
• Imaging Density Disturbances in Water with a 41.3-Attosecond Time Resolution
• Self-Consistent Equations Including Exchange and Correlation Effects
• A Collective Description of Electron Interactions: III. Coulomb Interactions in a Degenerate Electron Gas
• On the Constitution of Metallic Sodium

Discussions

• Bista, Shinohara, Dmowski, Ryu, Kim, Upton, Gretarsson, Sundermann, Egami: Observation of Real-Space Dynamic Electron Correlation in Beryllium https://arxiv.org/abs/2601.20814 https://arxiv.org/pdf/26 [bsky, 0 points, 0 comments]

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