title: Large magnetoresistance of nickel-silicide nanowires: non-equilibrium heating of magnetically-coupled dangling bonds.
abstract: We demonstrate large (>100%) time-dependent magnetoresistance in nickel-silicide nanowires and develop a thermodynamic model for this behavior. The model describes nonequilibrium heating of localized spins in an increasing magnetic field. We find a strong interaction between spins but no long-range magnetic order. The spins likely come from unpaired dangling bonds in the interfacial layers of the nanowires. The model indicates that although these bonds couple weakly to a thermal bath, they dominate the nanowire resistance.
authors: Department of Electrical Engineering, Arizona State University, Tempe, Arizona 85287-5706, United States.
authors: T
authors: T
authors: Kim
authors: R V
authors: RV
authors: Chamberlin
authors: J P
authors: JP
authors: Bird