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By its very nature, Spin Wave (SW) interference provides intrinsic support for Majority logic function evaluation. Due to this and the fact that the 3-input Majority (MAJ3) gate and the Inverter constitute a universal Boolean logic gate set, different MAJ3 gate implementations have been proposed. However, they cannot be directly utilized for the construction of larger SW logic circuits as they lack a key cascading mechanism, i.e., fan-out capability. In this paper, we introduce a novel ladder-shaped SW MAJ3 gate design able to provide a maximum fan-out of 2 (FO2). The proper gate functionality is validated by means of micromagnetic simulations, which also demonstrate that the amplitude mismatch between the two outputs is negligible proving that an FO2 is properly achieved. Additionally, we evaluate the gate area and compare it with SW state-of-the-art and 15nm CMOS counterparts working under the same conditions. Our results indicate that the proposed structure requires 12x less area than the 15 nm CMOS MAJ3 gate and that at the gate level the fan-out capability results in 16% area savings, when compared with the state-of-the-art SW majority gate counterparts.
Technology, Science & Technology, Condensed Matter - Mesoscale and Nanoscale Physics, Spin wave computing, Physics, QC1-999, Materials Science, 0205 Optical Physics, FOS: Physical sciences, Materials Science, Multidisciplinary, Physics - Applied Physics, Applied Physics (physics.app-ph), 620, Physics, Applied, 0906 Electrical and Electronic Engineering, Physical Sciences, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), Science & Technology - Other Topics, Nanoscience & Nanotechnology, 51 Physical sciences, 0206 Quantum Physics, 40 Engineering
Technology, Science & Technology, Condensed Matter - Mesoscale and Nanoscale Physics, Spin wave computing, Physics, QC1-999, Materials Science, 0205 Optical Physics, FOS: Physical sciences, Materials Science, Multidisciplinary, Physics - Applied Physics, Applied Physics (physics.app-ph), 620, Physics, Applied, 0906 Electrical and Electronic Engineering, Physical Sciences, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), Science & Technology - Other Topics, Nanoscience & Nanotechnology, 51 Physical sciences, 0206 Quantum Physics, 40 Engineering
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