Stochastic dynamics of strongly-bound magnetic vortex pairs

Stochastic dynamics of strongly-bound magnetic vortex pairs

We demonstrate that strongly-bound spin-vortex pairs exhibit pronounced stochastic behaviour. Such dynamics is due to collective magnetization states originating from purely dipolar interactions between the vortices. The resulting thermal noise exhibits telegraph-like behaviour, with random switchin...

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Main Authors: A. V. Bondarenko, E. Holmgren, B. C. Koop, T. Descamps, B. A. Ivanov, V. Korenivski
Format: Article
Language:English
Published: AIP Publishing LLC 2017-05-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4974066
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spelling doaj-ff4036b10201456c9154e3faf3d6bbd22020-11-25T00:27:33ZengAIP Publishing LLCAIP Advances2158-32262017-05-0175056007056007-710.1063/1.4974066117791ADVStochastic dynamics of strongly-bound magnetic vortex pairsA. V. Bondarenko0E. Holmgren1B. C. Koop2T. Descamps3B. A. Ivanov4V. Korenivski5Royal Institute of Technology, 10691 Stockholm, SwedenRoyal Institute of Technology, 10691 Stockholm, SwedenRoyal Institute of Technology, 10691 Stockholm, SwedenRoyal Institute of Technology, 10691 Stockholm, SwedenInstitute of Magnetism, National Academy of Science, 03142 Kiev, UkraineRoyal Institute of Technology, 10691 Stockholm, SwedenWe demonstrate that strongly-bound spin-vortex pairs exhibit pronounced stochastic behaviour. Such dynamics is due to collective magnetization states originating from purely dipolar interactions between the vortices. The resulting thermal noise exhibits telegraph-like behaviour, with random switching between different oscillation regimes observable at room temperature. The noise in the system is further studied by varying the external field and observing the related changes in the frequency of switching and the probability for different magnetic states and regimes. Monte Carlo simulations are used to replicate and explain the experimental observations.http://dx.doi.org/10.1063/1.4974066
collection DOAJ
language English
format Article
sources DOAJ
author A. V. Bondarenko
E. Holmgren
B. C. Koop
T. Descamps
B. A. Ivanov
V. Korenivski
spellingShingle A. V. Bondarenko
E. Holmgren
B. C. Koop
T. Descamps
B. A. Ivanov
V. Korenivski
Stochastic dynamics of strongly-bound magnetic vortex pairs
AIP Advances
author_facet A. V. Bondarenko
E. Holmgren
B. C. Koop
T. Descamps
B. A. Ivanov
V. Korenivski
author_sort A. V. Bondarenko
title Stochastic dynamics of strongly-bound magnetic vortex pairs
title_short Stochastic dynamics of strongly-bound magnetic vortex pairs
title_full Stochastic dynamics of strongly-bound magnetic vortex pairs
title_fullStr Stochastic dynamics of strongly-bound magnetic vortex pairs
title_full_unstemmed Stochastic dynamics of strongly-bound magnetic vortex pairs
title_sort stochastic dynamics of strongly-bound magnetic vortex pairs
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2017-05-01
description We demonstrate that strongly-bound spin-vortex pairs exhibit pronounced stochastic behaviour. Such dynamics is due to collective magnetization states originating from purely dipolar interactions between the vortices. The resulting thermal noise exhibits telegraph-like behaviour, with random switching between different oscillation regimes observable at room temperature. The noise in the system is further studied by varying the external field and observing the related changes in the frequency of switching and the probability for different magnetic states and regimes. Monte Carlo simulations are used to replicate and explain the experimental observations.
url http://dx.doi.org/10.1063/1.4974066
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AT eholmgren stochasticdynamicsofstronglyboundmagneticvortexpairs
AT bckoop stochasticdynamicsofstronglyboundmagneticvortexpairs
AT tdescamps stochasticdynamicsofstronglyboundmagneticvortexpairs
AT baivanov stochasticdynamicsofstronglyboundmagneticvortexpairs
AT vkorenivski stochasticdynamicsofstronglyboundmagneticvortexpairs
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