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Lee, Ki-Suk
Creative Lab. for Advanced Spin Systems (CLASS)
Research Interests
  • Magnetism, spintronics, spin dynamics, rare-earth free magnet

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Logic Operations Based on Magnetic-Vortex-State Networks

Cited 18 times inthomson ciCited 14 times inthomson ci
Title
Logic Operations Based on Magnetic-Vortex-State Networks
Author
Jung, HyunsungChoi, Youn-SeokLee, Ki-SukHan, Dong-SooYu, Young-SangIm, Mi-YoungFischer, PeterKim, Sang-Koog
Keywords
Logic operation; Magnetic-vortex network; Signal transfer; Vortex gyration; XOR
Issue Date
2012-05
Publisher
AMER CHEMICAL SOC
Citation
ACS NANO, v.6, no.5, pp.3712 - 3717
Abstract
Logic operations based on coupled magnetic vortices were experimentally demonstrated. We utilized a simple chain structure consisting of three physically separated but dipolar-coupled vortex-state Permalloy disks as well as two electrodes for application of the logical inputs. We directly monitored the vortex gyrations in the middle disk, as the logical output, by time-resolved full-field soft X-ray microscopy measurements. By manipulating the relative polarization configurations of both end disks, two different logic operations are programmable: the XOR operation for the parallel polarization and the OR operation for the antiparallel polarization. This work paves the way for new-type programmable logic gates based on the coupled vortex-gyration dynamics achievable in vortex-state networks. The advantages are as follows: a low-power input signal by means of resonant vortex excitation, low-energy dissipation during signal transportation by selection of low-damping materials, and a simple patterned-array structure.
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DOI
10.1021/nn3000143
ISSN
1936-0851
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MSE_Journal Papers
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