Watch out electrons!: positron binding redefines chemical bonding in Be ₂

2025/01/01 by Rafael Porras-Roldan, Jorge Charry, Félix Moncada +3 · 1 voice
Engineering · Materials Science · Physics and Astronomy · #Muon and positron interactions and applications #Boron and Carbon Nanomaterials Research #Atomic and Molecular Physics

paper · pdf · doi:10.1039/d5sc05711f

openalex publication_date 2025/01/01 · openalex created_date 2025/10/28 · openalex updated_date 2026/07/22

Abstract

internuclear positron accumulation, similar to that in positron-anion systems. However, as the atoms approach equilibrium, the positron density undergoes a unique redistribution, moving out of the internuclear region to accumulate in the outer molecular vicinity. This distinct positron localization, combined with an otherwise repulsive electronic component, leads to overall system stabilization as the electron density dynamically follows the positron. This work expands our understanding of chemical bonding by strongly suggesting how an antiparticle can profoundly influence molecular stability.

Citations

• Monte Carlo sampling methods using Markov chains and their applications

Discussions

• Awesome to see this research in @chemicalscience.rsc.org being picked up by @chemistryworld.com! The original work was actually a #ChemSciPicks - doi.org/10.1039/D5SC... [bsky, 5 points, 0 comments]

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