Resistivity noise in crystalline magnetic nanowires and its implications to domain formation and kinetics
arXiv:0908.0136 · doi:10.1063/1.3212872
Abstract
We have investigated the time-dependent fluctuations in electrical resistance, or noise, in high quality crystalline magnetic nanowires within nanoporous templates. The noise increases exponentially with increasing temperature and magnetic field, and has been analyzed in terms of domain wall depinning within the Neel-Brown framework. The frequency-dependence of noise also indicates a crossover from nondiffusive kinetics to long-range diffusion at higher temperatures, as well as a strong collective depinning, which need to be considered when implementing these nanowires in magnetoelectronic devices.
7 pages, 4 figures
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Cited by in corpus (3)
- Probing long-range correlations in the Berezinskii-Kosterlitz-Thouless fluctuation regime of ultra-thin NbN superconducting films using transport noise measurements
- Tracking random walk of individual domain walls in cylindrical nanomagnets with resistance noise
- Field-tunable stochasticity in the magnetization reversal of a cylindrical nanomagnet