Experimental demonstration of fanout for Nanomagnet Logic

Abstract

Nanoscale magnets can process and move information via fringing field interactions. Wires, gates, and inverters have been demonstrated (Fig. 1a-c)1 - all at room temperature. Nanomagnet Logic (NML) devices can be made with standard lithographic techniques, and even with drive circuitry overhead, energy/performance gains over CMOS are possible2. Still, demonstrating wires and gates in isolation does not equate to a deployable digital system. For systems, it is widely accepted that a technology must meet five criteria3 - (i) a device should have non- linear response characteristics, (ii) the output of one device must drive another, (iii) unwanted dataflow (or feedback) should not occur, (iv) a device must enable a functionally complete logic set, and (v) power amplification (or gain greater than 1) is needed. We report experimental demonstration of the fifth tenet of digital logic - fanout.