Generation and annihilation time of magnetic droplet solitons

Magnetic droplet solitons were first predicted to occur in materials with uniaxial magnetic anisotropy due to a long-range attractive interaction between elementary magnetic excitations, magnons. A non-equilibrium magnon population provided by a spin-polarized current in nanocontacts enables their c...

Descripción completa

Detalles Bibliográficos
Autores: Hang, Jinting, Hahn, Christian, Statuto, Nahuel, Macià Bros, Ferran, Kent, Andrew D.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/176765
Acceso en línea:https://hdl.handle.net/2445/176765
Access Level:acceso abierto
Palabra clave:Solitons
Anisotropia
Raigs X
Anisotropy
X-rays
id ES_f9c2ee500cf5f3bfc3a167cded3ca192
oai_identifier_str oai:recercat.cat:2445/176765
network_acronym_str ES
network_name_str España
repository_id_str
spelling Generation and annihilation time of magnetic droplet solitonsHang, JintingHahn, ChristianStatuto, NahuelMacià Bros, FerranKent, Andrew D.SolitonsAnisotropiaRaigs XSolitonsAnisotropyX-raysMagnetic droplet solitons were first predicted to occur in materials with uniaxial magnetic anisotropy due to a long-range attractive interaction between elementary magnetic excitations, magnons. A non-equilibrium magnon population provided by a spin-polarized current in nanocontacts enables their creation and there is now clear experimental evidence for their formation, including direct images obtained with scanning x-ray transmission microscopy. Interest in magnetic droplets is associated with their unique magnetic dynamics that can lead to new types of high frequency nanometer scale oscillators of interest for information processing, including in neuromorphic computing. However, there are no direct measurements of the time required to nucleate droplet solitons or their lifetime-experiments to date only probe their steady-state characteristics, their response to dc spin-currents. Here we determine the timescales for droplet annihilation and generation using current pulses. Annihilation occurs in a few nanoseconds while generation can take several nanoseconds to a microsecond depending on the pulse amplitude. Micromagnetic simulations show that there is an incubation time for droplet generation that depends sensitively on the initial magnetic state of the nanocontact. An understanding of these processes is essential to utilizing the unique characteristics of magnetic droplet solitons oscillators, including their high frequency, tunable and hysteretic response.Nature Publishing Group2021202120182021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion6 p.application/pdfhttps://hdl.handle.net/2445/176765Articles publicats en revistes (Física de la Matèria Condensada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1038/s41598-018-25134-zScientific Reports, 2018, vol. 8, num. 1, p. 6847https://doi.org/10.1038/s41598-018-25134-zcc-by (c) Hang, Jinting et al., 2018http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1767652026-05-29T05:05:01Z
dc.title.none.fl_str_mv Generation and annihilation time of magnetic droplet solitons
title Generation and annihilation time of magnetic droplet solitons
spellingShingle Generation and annihilation time of magnetic droplet solitons
Hang, Jinting
Solitons
Anisotropia
Raigs X
Solitons
Anisotropy
X-rays
title_short Generation and annihilation time of magnetic droplet solitons
title_full Generation and annihilation time of magnetic droplet solitons
title_fullStr Generation and annihilation time of magnetic droplet solitons
title_full_unstemmed Generation and annihilation time of magnetic droplet solitons
title_sort Generation and annihilation time of magnetic droplet solitons
dc.creator.none.fl_str_mv Hang, Jinting
Hahn, Christian
Statuto, Nahuel
Macià Bros, Ferran
Kent, Andrew D.
author Hang, Jinting
author_facet Hang, Jinting
Hahn, Christian
Statuto, Nahuel
Macià Bros, Ferran
Kent, Andrew D.
author_role author
author2 Hahn, Christian
Statuto, Nahuel
Macià Bros, Ferran
Kent, Andrew D.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Solitons
Anisotropia
Raigs X
Solitons
Anisotropy
X-rays
topic Solitons
Anisotropia
Raigs X
Solitons
Anisotropy
X-rays
description Magnetic droplet solitons were first predicted to occur in materials with uniaxial magnetic anisotropy due to a long-range attractive interaction between elementary magnetic excitations, magnons. A non-equilibrium magnon population provided by a spin-polarized current in nanocontacts enables their creation and there is now clear experimental evidence for their formation, including direct images obtained with scanning x-ray transmission microscopy. Interest in magnetic droplets is associated with their unique magnetic dynamics that can lead to new types of high frequency nanometer scale oscillators of interest for information processing, including in neuromorphic computing. However, there are no direct measurements of the time required to nucleate droplet solitons or their lifetime-experiments to date only probe their steady-state characteristics, their response to dc spin-currents. Here we determine the timescales for droplet annihilation and generation using current pulses. Annihilation occurs in a few nanoseconds while generation can take several nanoseconds to a microsecond depending on the pulse amplitude. Micromagnetic simulations show that there is an incubation time for droplet generation that depends sensitively on the initial magnetic state of the nanocontact. An understanding of these processes is essential to utilizing the unique characteristics of magnetic droplet solitons oscillators, including their high frequency, tunable and hysteretic response.
publishDate 2018
dc.date.none.fl_str_mv 2018
2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/176765
url https://hdl.handle.net/2445/176765
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1038/s41598-018-25134-z
Scientific Reports, 2018, vol. 8, num. 1, p. 6847
https://doi.org/10.1038/s41598-018-25134-z
dc.rights.none.fl_str_mv cc-by (c) Hang, Jinting et al., 2018
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Hang, Jinting et al., 2018
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 6 p.
application/pdf
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
dc.source.none.fl_str_mv Articles publicats en revistes (Física de la Matèria Condensada)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869425123899998208
score 15,812429

Similares en LA Referencia