Tuesday 27 November 2007 at 15:00
Kelly Patton
(Institute of Theoretical Physics, University of Hamburg)
Spin-Polarized Tunneling Microscopy and
the Kondo Effect
Abstract:
The Kondo effect has become one of the hallmarks of many-body
physics. It has stimulated the development of both new experimental
and theoretical techniques. Although over forty years have passed
since its discovery some questions still remain unanswered, while
new ones are being posed. Recently, the Kondo resonance has been
observed by scanning tunneling microscope studying single magnetic
atoms on a metallic surface. With the advent of the spin-polarized
scanning microscope, it is now possible to probe spin resolved
aspects of a Kondo system. In this talk, I shall present the predicted
behavior of the Kondo effect, as would be observed using
a spin-polarized scanning microscope. We find the interaction of
the Kondo system with a spin-polarized tunneling current splits
the Kondo resonance into spin-up and spin-down components, similar
to an applied magnetic field.
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