https://doi.org/10.1140/epjb/e2007-00015-9
Spin-dependent transport in cluster-assembled nanostructures: influence of cluster size and matrix material
1
Laboratoire des Nanostructures en Matrices, École Polytechnique Fédérale de Lausanne, 1015 Lausanne-EPFL, Switzerland
2
Laboratoire de Physique des Matériaux Nanostructurés, École Polytechnique Fédérale de Lausanne, 1015 Lausanne-EPFL, Switzerland
Corresponding author: a matthias.hillenkamp@epfl.ch
Received:
29
September
2006
Published online:
12
January
2007
Spin-dependent transport in granular metallic nanostructures has been investigated by means of a thermoelectric measurement. Cobalt clusters of well-defined size (〈n〉 = 15-600) embedded in copper and silver matrices show magnetic field responses of up to several hundred percent at low temperature. The experimental observations are attributed to spin mixing. The influence of cluster size and matrix are discussed.
PACS: 72.25.Rb – Spin relaxation and scattering / 73.63.-b – Electronic transport in nanoscale materials and structures / 72.25.Ba – Spin polarized transport in metals / 73.50.Jt – Galvanomagnetic and other magnetotransport effects (including thermomagnetic effects)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007
