Feb 12 – 14, 2007
CERN
Europe/Zurich timezone

Electronic Configurations of sp-Element Atoms at Nickel Surfaces and Interfaces

Feb 14, 2007, 2:40 PM
20m
Council Chamber, 503/1-001 (CERN)

Council Chamber, 503/1-001

CERN

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.

Primary author

Wolf-Dietrich Zeitz (Hahn-Meitner-Institut)

Co-authors

Przemyslaw Imielski (Freie Universität Berlin) William Brewer (Freie Universität Berlin) Yuriy Manzhur (Hahn-Meitner-Institut)

Presentation materials