Magnetic bubblecade memory based on chiral domain walls

Unidirectional motion of magnetic domain walls is the key concept underlying next-generation domain-wall-mediated memory and logic devices. Such motion has been achieved either by injecting large electric currents into nanowires or by employing domain-wall tension induced by sophisticated structural...

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Published in:Scientific reports 2015-03, Vol.5 (1), p.9166-9166, Article 9166
Main Authors: Moon, Kyoung-Woong, Kim, Duck-Ho, Yoo, Sang-Cheol, Je, Soong-Geun, Chun, Byong Sun, Kim, Wondong, Min, Byoung-Chul, Hwang, Chanyong, Choe, Sug-Bong
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639/166/987
639/766/119/1001
639/925/929
639/925/930
Asymmetry
Electric currents
Humanities and Social Sciences
Magnetic fields
Magnetism
multidisciplinary
Nanotechnology
Science
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cited_by cdi_FETCH-LOGICAL-c504t-3805132db662b3de84b73c595b0716bf55cc127857fa46fe868f08e47191b90f3
cites cdi_FETCH-LOGICAL-c504t-3805132db662b3de84b73c595b0716bf55cc127857fa46fe868f08e47191b90f3
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container_title Scientific reports
container_volume 5
creator Moon, Kyoung-Woong
Kim, Duck-Ho
Yoo, Sang-Cheol
Je, Soong-Geun
Chun, Byong Sun
Kim, Wondong
Min, Byoung-Chul
Hwang, Chanyong
Choe, Sug-Bong
description Unidirectional motion of magnetic domain walls is the key concept underlying next-generation domain-wall-mediated memory and logic devices. Such motion has been achieved either by injecting large electric currents into nanowires or by employing domain-wall tension induced by sophisticated structural modulation. Herein, we demonstrate a new scheme without any current injection or structural modulation. This scheme utilizes the recently discovered chiral domain walls, which exhibit asymmetry in their speed with respect to magnetic fields. Because of this asymmetry, an alternating magnetic field results in the coherent motion of the domain walls in one direction. Such coherent unidirectional motion is achieved even for an array of magnetic bubble domains, enabling the design of a new device prototype—magnetic bubblecade memory—with two-dimensional data-storage capability.
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subjects 639/166/987
639/766/119/1001
639/925/929
639/925/930
Asymmetry
Electric currents
Humanities and Social Sciences
Magnetic fields
Magnetism
multidisciplinary
Nanotechnology
Science
title Magnetic bubblecade memory based on chiral domain walls
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