Non-volatile logic device

A non-volatile logic device, comprising:

• a first input element which is magnetizable along a first direction of magnetization to impart or change a chirality of a domain wall traversing the first input element, the chirality representing a first logical input;
• a second input element joined to the first input element to transport the domain wall, the second input element being magnetizable along a second direction of magnetization which is orthogonal to the first direction of magnetization, a magnetization of the second input element along the second direction of magnetization representing a second logical input;
• a bifurcated output section connected to the second input element at a junction, the output section comprising a pair of output elements for selectively receiving the domain wall from the second input element, a magnetization of at least part of the respective output elements being changeable by propagation of the domain wall along the respective output elements;
• and
• a non-magnetic conductive element disposed in partially overlapping relationship with the second input element at or near the junction;
• wherein the magnetization in an output element after propagation of the domain wall represents a value of a logical function of the first logical input and/or the second logical input, or a logical complement of the value;
• and
• wherein the logical function is selectable by passing an electrical current through the non-magnetic conductive element to induce a magnetic field of a desired magnitude and direction in the second input element.