Condensed Matter Physics Seminar
2 p.m., Thursday, February 20, 2003
Room 1201, Physics Building
Superconductor-ferromagnet
heterostructures
Alexandre Buzdin
(University of Bordeaux, France;
currently visiting Argonne National Laboratory)
Abstract:
Interplay between superconductivity and ferromagnetism has attracted much
attention during the last twenty years. Recently, great progress in preparation
of high quality hybrid superconductor (S) – ferromagnet (F) systems has been
achieved , which permitted to observe many new effects. Proximity effect at S/F
interface is very peculiar, because the superconducting electrons penetrating
into the ferromagnet occur to be under the influence of very high exchange
field. Such situation is impossible in bulk singlet superconductors, where
superconductivity persists only up to the exchange field of the order of
superconducting transition temperature. Hence the study of S-F systems provides
a unique opportunity to observe the peculiar behavior of superconductivity under
huge exchange field.
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Host: Yakovenko
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