N. D’Souza, M. Salehi-Fashami, Supriyo Bandyopadhyay, J. Atulasimha
{"title":"Hybrid spintronics-straintronic nanomagnetic logic with two-state elliptical and four-state concave magnetostrictive nanomagnets","authors":"N. D’Souza, M. Salehi-Fashami, Supriyo Bandyopadhyay, J. Atulasimha","doi":"10.1109/DRC.2014.6872321","DOIUrl":null,"url":null,"abstract":"Recently, nanomagnetic logic has emerged as a promising alternative to transistor based logic because it offers both non-volatility and energy-efficiency. In particular, if the switching of the nanomagnets employs “straintronics” [1], whereby the magnetization of a multiferroic magnet is switched with a tiny voltage generating strain in a magnetostrictive-piezoelectric composite, the energy dissipated per bit flip can be reduced to a few hundred kT at room temperature. We had shown, in prior work, that a multiferroic nanomagnet with biaxial magnetocrystalline anisotropy has four stable magnetization orientations that can encode four states (Fig. 1a). Besides doubling the logic density (four-state versus two-state) for logic applications [2, 3], these four-state nanomagnets can be exploited for higher order applications such as image reconstruction and recognition in the presence of noise, associative memory and neuromorphic computing [4].","PeriodicalId":293780,"journal":{"name":"72nd Device Research Conference","volume":"120 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"72nd Device Research Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/DRC.2014.6872321","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
Recently, nanomagnetic logic has emerged as a promising alternative to transistor based logic because it offers both non-volatility and energy-efficiency. In particular, if the switching of the nanomagnets employs “straintronics” [1], whereby the magnetization of a multiferroic magnet is switched with a tiny voltage generating strain in a magnetostrictive-piezoelectric composite, the energy dissipated per bit flip can be reduced to a few hundred kT at room temperature. We had shown, in prior work, that a multiferroic nanomagnet with biaxial magnetocrystalline anisotropy has four stable magnetization orientations that can encode four states (Fig. 1a). Besides doubling the logic density (four-state versus two-state) for logic applications [2, 3], these four-state nanomagnets can be exploited for higher order applications such as image reconstruction and recognition in the presence of noise, associative memory and neuromorphic computing [4].