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

2017/04/01 by Tuo Li, Li, Tuo, W. Andreas Schroeder +1 · 1 citation
Physics and Astronomy · #Topological Materials and Phenomena #Quantum and electron transport phenomena #Advanced Chemical Physics Studies

paper · pdf · doi:10.48550/arxiv.1704.00194

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 (Δp_T) and high brightness photocathode. The density functional theory (DFT) based photoemission analysis successfully elucidates that the 'hole-like' Λ⁺₆ energy band in the L valley with low effective mass m^* results in low Δp_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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• Advances in bright electron sources

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