Method of propagating magnetic domain wall in magnetic devices

Abstract

The disclosed technology generally relates to magnetic devices, and more particularly to magnetic devices configured to generate a stream of domain walls propagating along an output magnetic bus. In an aspect, a magnetic device includes a magnetic propagation layer, which in turn includes a plurality of magnetic buses. The magnetic buses include an output magnetic bus configured to guide propagating magnetic domain walls. The magnetic propagation layer further comprises a central region in which the magnetic buses converge and are joined together. The magnetic buses include at least a first and a second magnetic bus having opposite magnetization orientations with respect to each other, such that a domain wall separating the opposite magnetization states is pinned in the central region. In another aspect, a method includes providing the magnetic device and generating the stream of domain walls propagating along the output magnetic bus by applying spin orbit and/or transfer torques to the pinned domain wall to alternate the pinned domain wall between two stable configurations, in which each stable configuration corresponds to a different magnetization state of the output magnetic bus in at least a region where the output magnetic bus is joined to the central region.