Coulomb-Correlated Multi-Electron States Generated by Nanotip Photoemission

Rudolf Haindl,Armin Feist,Till Domröse,Marcel Möller,John H. Gaida, Sergey V. Yaluniu,Claus Ropers

2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)（2023）

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摘要

Correlations between electrons are at the core of numerous phenomena in atomic, molecular, and solid-state systems. Harnessing free-particle correlations remains challenging, with the recent implementation of nanoscale single-electron sources [1] and observation of weak anti-bunching in electron beams [2], [3]. A powerful approach to induce strong electron-electron interactions is femtosecond-triggered photoemission from nanotips [4], [5] with high spatial and temporal confinement. However, ensemble-averaged detection typically conceals few-body effects.

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关键词

Coulomb-correlated multielectron states,Coulomb-mediated three-dimensional correlations,effective emission volume,electron beams,emitter size,ensemble-averaged detection,event-based spectroscopy,femtosecond-triggered photoemission,few-body effects,free-particle correlations,laser-triggered few-electron pulses,longitudinal source shift,multipeak spectra,nanoscale single-electron sources,nanotip photoemission,pair-correlation energy,Schottky field emitter,spatial confinement,state-sorted beam caustics,strong electron-electron interactions,temporal confinement,three-electron states,two-electron states,ultrafast transmission electron microscope,weak anti-bunching

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