Vortical structures for nanomagnetic memory induced by dipole-dipole interaction in monolayer disks

We find in simulations that, magnetic vortices induced by the DDI show no chirality, the multi-vortex structures simulated with two quantum methods agree well with each other, both external magnetic field and uniaxial anisotropy perpendicular to the disk-plane can help stabilize the vortical textures if DDI is not strong enough, providing new techniques for nanomagnetic data storage and computing.866