Magnetic electron emission holography

[摘要] I show that the difference in ;;spin up;; and ;;spin down;; angular intensities of electrons emitted from inner core levels of atoms in a magnetic crystal is a spin hologram. Its inverse ;;pictures;; the component of the spins in the neighborhood of the emitter in the direction that the detected electrons are spin analyzed. Measuring the spin difference in three orthogonal directions determines a vector hologram which gives an image of the atomic spin vectors. I develop the theory and illustrate the feasibility and potential of this novel technique by means of model calculations. Furthermore, I give a detailed treatment of the elastic scattering processes that are responsible for the spin holograms, and study the effect of multiple scattering and self-interference which could cause complications.

[发布机构] Rice University

[效力级别] Physics