Speaker : Professor Jim Williams
Professor of Physics
University of Western Australia
Topic : Angular momentum phenomena in single atoms and thin films
Date : January 20th, 2009
Time : 11:30 AM
Venue : C V Raman Hall, IACS

All are cordially invited to attend

Abstract: Spin-polarised electron scattering of about 20 eV has revealed how exchange and spin orbit interactions in neon and zinc atoms indicate single particle scattering interactions and how electron configuration effects can be observed. In zinc atms the effects of auto-ionization influence the formation of resonances as seen in the photon polarization decay channels. The polarized electron-pair (e,2e) scattering -in-reflection from tungsten surfaces and thin films of oxygen anf Fe have shown that diffraction-type scattering indicates significant exchange and spin-orbit interactions whose effects penetrte several multilayers. The work may have applications in spin transfer devices.