Field- and Current-Driven Magnetic Domain-Wall Inverter and Diode

Abstract

In analogy to charge in conventional circuitry, magnetic domain walls provide an alternative medium for encoding digital information. The authors exploit the lateral coupling between out-of-plane and in-plane magnetic regions induced by the interfacial Dzyaloshinskii-Moriya interaction in thin magnetic films to realize both field- and current-driven magnetic domain-wall inverters. Nonreciprocity in transport is introduced by breaking the symmetry of the inverter's geometry, thus realizing a domain-wall diode. This innovative component enhances flexibility in the design of domain-wall circuits and extends the operation of current-driven domain-wall devices to the ac-signal regime.