Magneto-transport in ferromagnetic granular networks

✍ Scribed by Hagai Vilchik; Aviad Frydman; Richard Berkovits

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 151 KB
• Volume: 3
• Category: Article
• ISSN: 1862-6351
• DOI: 10.1002/pssc.200562735

✦ Synopsis

Abstract

Using numerical simulations and analytical calculations we have examined the transport properties of a ferromagnetic granular systems. We model this complex network system by an ensemble of ferromagnetic conducting grains randomly located on a 2D plain. Quite surprisingly, the magneto‐resistance of a complex network can be approximated by the magneto‐resistance of a single pair of ferromagnetic grains, although our simulations show that the transport trajectories change from a quasi‐1D path through the system to a percolation network through the larger grains as the number of grain in the system increases. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)