| Dynamic control of magnetic nanowires by light-induced domain-wall kickoffs. | |
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MedLine Citation:
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PMID: 23202373 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Controlling the speed at which systems evolve is a challenge shared by all disciplines, and otherwise unrelated areas use common theoretical frameworks towards this goal. A particularly widespread model is Glauber dynamics, which describes the time evolution of the Ising model and can be applied to any binary system. Here we show, using molecular nanowires under irradiation, that Glauber dynamics can be controlled by a novel domain-wall kickoff mechanism. In contrast to known processes, the kickoff has unambiguous fingerprints, slowing down the spin-flip attempt rate by several orders of magnitude, and following a scaling law. The required irradiance is very low, a substantial improvement over present methods of magneto-optical switching. These results provide a new way to control and study stochastic dynamic processes. Being general for Glauber dynamics, they can be extended to different kinds of magnetic nanowires and to numerous fields, ranging from social evolution to neural networks and chemical reactivity. |
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Authors:
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Eric Heintze; Fadi El Hallak; Conrad Clauß; Angelo Rettori; Maria Gloria Pini; Federico Totti; Martin Dressel; Lapo Bogani |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-12-02 |
Journal Detail:
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Title: Nature materials Volume: - ISSN: 1476-1122 ISO Abbreviation: Nat Mater Publication Date: 2012 Dec |
Date Detail:
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Created Date: 2012-12-3 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101155473 Medline TA: Nat Mater Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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1. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart, Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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