Speaker
Wolf-Dietrich Zeitz
(Hahn-Meitner-Institut)
Description
By elaborate preparation techniques radioactive cadmium and selenium probes
are positioned at different sites at surfaces of ferromagnets and in interfaces.
Magnetic and quadrupolar hyperfine interactions are measured by angular
correlation spectroscopy. At the nickel surface, the measured magnetic fields
correlate with the number of neighbouring host atoms. Band structure
calculations confirm these findings and predict magnetic fields for various sp-
elements from the local level structure of the condution s-electrons. The
measured quadrupolar interaction is determined by the occupation of the p-
sublevels at the impurity atom. The results contribute to understand
mechanisms in which scattering of electrons in crystals play a major role.
Author
Wolf-Dietrich Zeitz
(Hahn-Meitner-Institut)
Co-authors
Przemyslaw Imielski
(Freie Universität Berlin)
William Brewer
(Freie Universität Berlin)
Yuriy Manzhur
(Hahn-Meitner-Institut)
