2013/10/21 by Kuntal Roy · 2 citations
Engineering · Materials Science · Physics and Astronomy · #Dissipation #Electronic circuit #Ferroelectric and Negative Capacitance Devices #Magnetic properties of thin films #Magnetization #Magnetostriction #Multiferroics #Multiferroics and related materials #Nanomagnet #Piezoelectricity #Stochastic computing #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.4826688
published as Appl. Phys. Lett. 103, 173110 (2013)
openalex publication_date 2013/10/21 · arxiv created 2015/04/13 · arxiv updated 2015/04/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The primary impediment to continued downscaling of traditional charge-based electronic devices in accordance with Moore's law is the excessive energy dissipation that takes place in the device during switching of bits. One very promising solution is to utilize multiferroic heterostructures, comprised of a single-domain magnetostrictive nanomagnet strain-coupled to a piezoelectric layer, in which the magnetization can be switched between its two stable states while dissipating minuscule amount of energy. However, no efficient and viable means of computing is proposed so far. Here we show that such single multiferroic composites can act as universal logic gates for computing purposes, which we demonstrate by solving the stochastic Landau-Lifshitz-Gilbert equation of magnetization dynamics in the presence of room-temperature thermal fluctuations. The proposed concept can overwhelmingly simplify the design of large-scale circuits and portend a highly dense yet an ultra-low-energy computing paradigm for our future information processing systems.