Fig. 2: Zero-charge vertex configuration in a tetrapod structure—the elementary building block of a diamond-type 3D ASI lattice.
From: Defect-sensitive high-frequency modes in a three-dimensional artificial magnetic crystal
a Only one type of zero-charge configuration exists in 3D, whereas different zero-charge vertex structures are known from 2D square ice systems. The flavors of zero-charge vertex configurations shown in (b) and (c), known from 2D square ice ASI lattices, differ qualitatively in their micromagnetic structure, and they have different physical properties. Nevertheless, they can be interpreted as projections of a single 3D structure onto different planes. The color code represents the x-component of the magnetization.
