Electron energy loss spectroscopy with parallel readout of energy and momentum
Harald Ibach, Fran\c{c}ois C. Bocquet, Jessica Sforzini and, Serguei Soubatch, F. Stefan Tautz
TL;DR
This paper presents a high-resolution electron source enabling rapid, parallel measurement of energy and momentum in electron energy loss spectroscopy, significantly improving efficiency and resolution.
Contribution
It introduces a novel add-on electron source with multiplex gain for parallel energy and momentum readout in electron energy loss spectroscopy.
Findings
Complete phonon dispersion of Cu(111) measured in seven minutes
Achieved 4 meV energy resolution
Demonstrated rapid data acquisition with high resolution
Abstract
We introduce a high energy resolution electron source that matches the requirements for parallel readout of energy and momentum of modern hemispherical electron energy analyzers. The system is designed as an add-on device to typical photoemission chambers. Due to the multiplex gain, a complete phonon dispersion of a Cu(111) surface was measured in seven minutes with 4 meV energy resolution.
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