Computational design of a material for high-efficiency spin-polarized electron source

摘要: The search for the highest quality and efficient spin-polarized electron source (SPES) is of fundamental importance in investigation spin-dependent phenomena atomic, condensed-matter, nuclear, particle physics. We propose a material, AgGaSe2 CuAu phase, as high-quality SPES. show that phase has an “ideal” band structure allows generation beams with 100% polarization: direct gap large positive spin-orbit splitting crystal-field splitting. Moreover, we predict strain-free can be obtained by epitaxial growth on ZnSe substrate.