Transport in Superlattices of Magnetic Nanoparticles: Coulomb Blockade, Hysteresis, and Switching Induced by a Magnetic Field
Reasmey P. Tan(Laboratoire de Physique et Chimie des Nano-Objets), J. Carrey(Laboratoire de Physique et Chimie des Nano-Objets), Céline Desvaux, J. Grisolia(Laboratoire de Physique et Chimie des Nano-Objets), Philippe Renaud, Bruno Chaudret(Laboratoire de Chimie de Coordination), Marc Respaud(Laboratoire de Physique et Chimie des Nano-Objets)
Cited by 34Open Access
Abstract
We report on magnetotransport measurements on millimetric superlattices of Co-Fe nanoparticles surrounded by an organic layer. At low temperature, the transition between the Coulomb blockade and the conductive regime becomes abrupt and hysteretic. The transition between both regimes can be induced by a magnetic field, leading to a novel mechanism of magnetoresistance. Between 1.8 and 10 K, a high-field magnetoresistance attributed to magnetic disorder at the surface of the particles is also observed. Below 1.8 K, this magnetoresistance abruptly collapses and a low-field magnetoresistance is observed.
Related Papers
No related papers found
Powered by citation graph analysis