Effects of Length Fluctuation on Damage Spreading in a Triangular Nanowire Array

Abstract

A realistic quantum magnetic disk structure formed by a nanowire array is studied. The length fluctuation of the nanowires is described with Gaussian distributions. The magnetostatic interaction between two nanowires with different length and radius is derived. Based on that, we study the thermal stability of the nanowire array analytically and numerically by the damage spreading technique. The results show that when the magnetic cell’s spacing reduces (the storage density increases) or the nanowire length increases, damage spreading becomes difficult and the system stability is enhanced. In addition, the long-range magnetostatic interaction and the shape anisotropy make the system more stable and the nanowire length fluctuation influence is comparatively small.