Versatile spin-polarized electron source

摘要

One or more embodiments relate generally to the field of photoelectron spin and, more specifically, to a method and system for creating a controllable spin-polarized electron source. One preferred embodiment of the invention generally comprises: method for creating a controllable spin-polarized electron source comprising the following steps: providing one or more materials, the one or more materials having at least one surface and a material layer adjacent to said surface, wherein said surface comprises highly spin-polarized surface electrons, wherein the direction and spin of the surface electrons are locked together; providing at least one incident light capable of stimulating photoemission of said surface electrons; wherein the photon polarization of said incident light is tunable; and inducing photoemission of the surface electron states.

主权项

1. A method of creating a controllable spin-polarized electron source comprising the following steps:
a. providing one or more materials, the one or more materials having at least one surface and a material layer adjacent to said surface, wherein said surface comprises highly spin polarized surface electrons, wherein the direction and spin of the surface electrons are locked together; b. providing at least one incident light capable of stimulating photoemission of said surface electrons: wherein the incident light has a photon energy above the work function of said materials; wherein the photon polarization of incident light is tunable; wherein the different polarization and orientation of the incident light result in different polarization of said surface electrons; and c. inducing photoemission of the surface electron states.