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arXiv · 1704.00194

PbTe(111) Sub-Thermionic Photocathode: A Route to High-Quality Electron Pulses

Tuo Li·W. Andreas Schroeder
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Abstract

The emission properties of PbTe(111) single crystal have been extensively investigated to demonstrate that PbTe(111) is a promising low root mean square transverse momentum ({\Delta}p$_T$) and high brightness photocathode. The density functional theory (DFT) based photoemission analysis successfully elucidates that the 'hole-like' {\Lambda}$^+_6$ energy band in the $L$ valley with low effective mass $m^*$ results in low {\Delta}p$_T$. Especially, as a 300K solid planar photocathode, Te-terminated PbTe(111) single crystal is expected to be a potential 50K electron source.

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Tuo Li, W. Andreas Schroeder. 2017-04-01. PbTe(111) Sub-Thermionic Photocathode: A Route to High-Quality Electron Pulses. https://arxiv.org/abs/1704.00194

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