Skyrmion-based devices are promising candi-dates for non-volatile memory and low-delay time com-putation.Many skyrmion-based devices execute operation by controlling skyrmion trajectory,which can be impeded by the sky...Skyrmion-based devices are promising candi-dates for non-volatile memory and low-delay time com-putation.Many skyrmion-based devices execute operation by controlling skyrmion trajectory,which can be impeded by the skyrmion Hall effect.Here,the design of skyrmion-based arithmetic devices built on synthetic antiferromag-netic(SyAF)structures is presented,where the structure can greatly suppress skyrmion Hall effect.In this study,the operations of skyrmion-based half adder,full adder,and XOR logic gate are executed by introducing geometric notches and tilted edges,which can annihilate or diverge skyrmion.Performance of these skyrmion-based devices is evaluated,where the delay time and energy-delay product of the single-bit full adder are 1.95 ns and 2.50×10^(-22)Js,which are only 12%and 79%those of the previously proposed skyrmion-based single-bit full adder.This improvement is significant in the construction of ripple-carry adder and ripple-carry adder-subtractor.Therefore,our skyrmion-based SyAF arithmetic device is a promising candidate to develop high-speed spintronic devices.展开更多
基金financially supported by Shenzhen Fundamental Research Fund (No. JCYJ20210324120213037)Guangdong Special Support Project (No. 2019BT02X030)+8 种基金Shenzhen Peacock Group Plan (No. KQTD20180413181702403)Pearl River Recruitment Program of Talents (No. 2017GC010293)the National Natural Science Foundation of China (Nos. 11974298 and 61961136006)International Research Fellow of Japan Society for the Promotion of Science (JSPS), was supported by JSPS KAKENHI (No. JP20F20363)the support by the Grants-in-Aid for Scientific Research from JSPS KAKENHI (Nos. JP18H03676 and JP17K05490)the support by Core Research for Evolutionary Science and Technology, Japan Science and Technology Agency (Nos. JPMJCR20T2 and JPMJCR16F1)the support by the Grants-in-Aid for Scientific Research from JSPS KAKENHI (Nos. JP20F20363 and JP21H01364)the support by the National Natural Science Foundation of China (No. 12104327)the funding from the European Union’s Framework Program for Research and Innovation Horizon 2020 (No. 2014-2020) under the Marie Sk?odowska-Curie Grant Agreement No. 860060 (ITN MagnEFi)
文摘Skyrmion-based devices are promising candi-dates for non-volatile memory and low-delay time com-putation.Many skyrmion-based devices execute operation by controlling skyrmion trajectory,which can be impeded by the skyrmion Hall effect.Here,the design of skyrmion-based arithmetic devices built on synthetic antiferromag-netic(SyAF)structures is presented,where the structure can greatly suppress skyrmion Hall effect.In this study,the operations of skyrmion-based half adder,full adder,and XOR logic gate are executed by introducing geometric notches and tilted edges,which can annihilate or diverge skyrmion.Performance of these skyrmion-based devices is evaluated,where the delay time and energy-delay product of the single-bit full adder are 1.95 ns and 2.50×10^(-22)Js,which are only 12%and 79%those of the previously proposed skyrmion-based single-bit full adder.This improvement is significant in the construction of ripple-carry adder and ripple-carry adder-subtractor.Therefore,our skyrmion-based SyAF arithmetic device is a promising candidate to develop high-speed spintronic devices.
