Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7

Autores
Samarakoon, Anjana M.; Grigera, Santiago Andrés; Tennant, D. Alan; Kirste, Alexander; Klemke, Bastian; Strehlow, Peter; Meissner, Michael; Hallén, Jonathan N.; Jaubert, Ludovic; Castelnovo, Claudio; Moessner, Roderich
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Noise generated by motion of charge and spin provides a unique window into materials at the atomic scale. From temperature of resistors to electrons breaking into fractional quasiparticles, ?listening? to the noise spectrum is a powerful way to decode underlying dynamics. Here, we use ultrasensitive superconducting quantum interference device (SQUIDs) to probe the puzzling noise in a frustrated magnet, the spin-ice compound Dy2Ti2O7 (DTO), revealing cooperative and memory effects. DTO is a topological magnet in three dimensions?characterized by emergent magnetostatics and telltale fractionalized magnetic monopole quasiparticles?whose real-time dynamical properties have been an enigma from the very beginning. We show that DTO exhibits highly anomalous noise spectra, differing significantly from the expected Brownian noise of monopole random walks, in three qualitatively different regimes: equilibrium spin ice, a ?frozen? regime extending to ultralow temperatures, and a high-temperature ?anomalous? paramagnet. We present several distinct mechanisms that give rise to varied colored noise spectra. In addition, we identify the structure of the local spin-flip dynamics as a crucial ingredient for any modeling. Thus, the dynamics of spin ice reflects the interplay of local dynamics with emergent topological degrees of freedom and a frustration-generated imperfectly flat energy landscape, and as such, it points to intriguing cooperative and memory effects for a broad class of magnetic materials.
Fil: Samarakoon, Anjana M.. Oak Ridge National Laboratory; Estados Unidos
Fil: Grigera, Santiago Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; Argentina
Fil: Tennant, D. Alan. Oak Ridge National Laboratory; Estados Unidos
Fil: Kirste, Alexander. No especifíca;
Fil: Klemke, Bastian. Helmholtz-Zentrum Berlin für Materialien und Energie; Alemania
Fil: Strehlow, Peter. No especifíca;
Fil: Meissner, Michael. Helmholtz-Zentrum Berlin für Materialien und Energie; Alemania
Fil: Hallén, Jonathan N.. University of Cambridge; Reino Unido
Fil: Jaubert, Ludovic. Centre National de la Recherche Scientifique; Francia
Fil: Castelnovo, Claudio. University of Cambridge; Reino Unido
Fil: Moessner, Roderich. Max Planck Institute for the Physics of Complex Systems; Alemania
Materia
magnetism
frustration
noise
dynamics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/240937
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/240937
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7Samarakoon, Anjana M.Grigera, Santiago AndrésTennant, D. AlanKirste, AlexanderKlemke, BastianStrehlow, PeterMeissner, MichaelHallén, Jonathan N.Jaubert, LudovicCastelnovo, ClaudioMoessner, Roderichmagnetismfrustrationnoisedynamicshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Noise generated by motion of charge and spin provides a unique window into materials at the atomic scale. From temperature of resistors to electrons breaking into fractional quasiparticles, ?listening? to the noise spectrum is a powerful way to decode underlying dynamics. Here, we use ultrasensitive superconducting quantum interference device (SQUIDs) to probe the puzzling noise in a frustrated magnet, the spin-ice compound Dy2Ti2O7 (DTO), revealing cooperative and memory effects. DTO is a topological magnet in three dimensions?characterized by emergent magnetostatics and telltale fractionalized magnetic monopole quasiparticles?whose real-time dynamical properties have been an enigma from the very beginning. We show that DTO exhibits highly anomalous noise spectra, differing significantly from the expected Brownian noise of monopole random walks, in three qualitatively different regimes: equilibrium spin ice, a ?frozen? regime extending to ultralow temperatures, and a high-temperature ?anomalous? paramagnet. We present several distinct mechanisms that give rise to varied colored noise spectra. In addition, we identify the structure of the local spin-flip dynamics as a crucial ingredient for any modeling. Thus, the dynamics of spin ice reflects the interplay of local dynamics with emergent topological degrees of freedom and a frustration-generated imperfectly flat energy landscape, and as such, it points to intriguing cooperative and memory effects for a broad class of magnetic materials.Fil: Samarakoon, Anjana M.. Oak Ridge National Laboratory; Estados UnidosFil: Grigera, Santiago Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; ArgentinaFil: Tennant, D. Alan. Oak Ridge National Laboratory; Estados UnidosFil: Kirste, Alexander. No especifíca;Fil: Klemke, Bastian. Helmholtz-Zentrum Berlin für Materialien und Energie; AlemaniaFil: Strehlow, Peter. No especifíca;Fil: Meissner, Michael. Helmholtz-Zentrum Berlin für Materialien und Energie; AlemaniaFil: Hallén, Jonathan N.. University of Cambridge; Reino UnidoFil: Jaubert, Ludovic. Centre National de la Recherche Scientifique; FranciaFil: Castelnovo, Claudio. University of Cambridge; Reino UnidoFil: Moessner, Roderich. Max Planck Institute for the Physics of Complex Systems; AlemaniaNational Academy of Sciences2022-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/240937Samarakoon, Anjana M.; Grigera, Santiago Andrés; Tennant, D. Alan; Kirste, Alexander; Klemke, Bastian; et al.; Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 119; 5; 1-2022; 1-60027-8424CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.pnas.org/lookup/doi/10.1073/pnas.2117453119info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.2117453119info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:50:35Zoai:ri.conicet.gov.ar:11336/240937instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:50:35.343CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7
title Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7
spellingShingle Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7
Samarakoon, Anjana M.
magnetism
frustration
noise
dynamics
title_short Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7
title_full Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7
title_fullStr Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7
title_full_unstemmed Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7
title_sort Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7
dc.creator.none.fl_str_mv Samarakoon, Anjana M.
Grigera, Santiago Andrés
Tennant, D. Alan
Kirste, Alexander
Klemke, Bastian
Strehlow, Peter
Meissner, Michael
Hallén, Jonathan N.
Jaubert, Ludovic
Castelnovo, Claudio
Moessner, Roderich
author Samarakoon, Anjana M.
author_facet Samarakoon, Anjana M.
Grigera, Santiago Andrés
Tennant, D. Alan
Kirste, Alexander
Klemke, Bastian
Strehlow, Peter
Meissner, Michael
Hallén, Jonathan N.
Jaubert, Ludovic
Castelnovo, Claudio
Moessner, Roderich
author_role author
author2 Grigera, Santiago Andrés
Tennant, D. Alan
Kirste, Alexander
Klemke, Bastian
Strehlow, Peter
Meissner, Michael
Hallén, Jonathan N.
Jaubert, Ludovic
Castelnovo, Claudio
Moessner, Roderich
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv magnetism
frustration
noise
dynamics
topic magnetism
frustration
noise
dynamics
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Noise generated by motion of charge and spin provides a unique window into materials at the atomic scale. From temperature of resistors to electrons breaking into fractional quasiparticles, ?listening? to the noise spectrum is a powerful way to decode underlying dynamics. Here, we use ultrasensitive superconducting quantum interference device (SQUIDs) to probe the puzzling noise in a frustrated magnet, the spin-ice compound Dy2Ti2O7 (DTO), revealing cooperative and memory effects. DTO is a topological magnet in three dimensions?characterized by emergent magnetostatics and telltale fractionalized magnetic monopole quasiparticles?whose real-time dynamical properties have been an enigma from the very beginning. We show that DTO exhibits highly anomalous noise spectra, differing significantly from the expected Brownian noise of monopole random walks, in three qualitatively different regimes: equilibrium spin ice, a ?frozen? regime extending to ultralow temperatures, and a high-temperature ?anomalous? paramagnet. We present several distinct mechanisms that give rise to varied colored noise spectra. In addition, we identify the structure of the local spin-flip dynamics as a crucial ingredient for any modeling. Thus, the dynamics of spin ice reflects the interplay of local dynamics with emergent topological degrees of freedom and a frustration-generated imperfectly flat energy landscape, and as such, it points to intriguing cooperative and memory effects for a broad class of magnetic materials.
Fil: Samarakoon, Anjana M.. Oak Ridge National Laboratory; Estados Unidos
Fil: Grigera, Santiago Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; Argentina
Fil: Tennant, D. Alan. Oak Ridge National Laboratory; Estados Unidos
Fil: Kirste, Alexander. No especifíca;
Fil: Klemke, Bastian. Helmholtz-Zentrum Berlin für Materialien und Energie; Alemania
Fil: Strehlow, Peter. No especifíca;
Fil: Meissner, Michael. Helmholtz-Zentrum Berlin für Materialien und Energie; Alemania
Fil: Hallén, Jonathan N.. University of Cambridge; Reino Unido
Fil: Jaubert, Ludovic. Centre National de la Recherche Scientifique; Francia
Fil: Castelnovo, Claudio. University of Cambridge; Reino Unido
Fil: Moessner, Roderich. Max Planck Institute for the Physics of Complex Systems; Alemania
description Noise generated by motion of charge and spin provides a unique window into materials at the atomic scale. From temperature of resistors to electrons breaking into fractional quasiparticles, ?listening? to the noise spectrum is a powerful way to decode underlying dynamics. Here, we use ultrasensitive superconducting quantum interference device (SQUIDs) to probe the puzzling noise in a frustrated magnet, the spin-ice compound Dy2Ti2O7 (DTO), revealing cooperative and memory effects. DTO is a topological magnet in three dimensions?characterized by emergent magnetostatics and telltale fractionalized magnetic monopole quasiparticles?whose real-time dynamical properties have been an enigma from the very beginning. We show that DTO exhibits highly anomalous noise spectra, differing significantly from the expected Brownian noise of monopole random walks, in three qualitatively different regimes: equilibrium spin ice, a ?frozen? regime extending to ultralow temperatures, and a high-temperature ?anomalous? paramagnet. We present several distinct mechanisms that give rise to varied colored noise spectra. In addition, we identify the structure of the local spin-flip dynamics as a crucial ingredient for any modeling. Thus, the dynamics of spin ice reflects the interplay of local dynamics with emergent topological degrees of freedom and a frustration-generated imperfectly flat energy landscape, and as such, it points to intriguing cooperative and memory effects for a broad class of magnetic materials.
publishDate 2022
dc.date.none.fl_str_mv 2022-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/240937
Samarakoon, Anjana M.; Grigera, Santiago Andrés; Tennant, D. Alan; Kirste, Alexander; Klemke, Bastian; et al.; Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 119; 5; 1-2022; 1-6
0027-8424
CONICET Digital
CONICET
url http://hdl.handle.net/11336/240937
identifier_str_mv Samarakoon, Anjana M.; Grigera, Santiago Andrés; Tennant, D. Alan; Kirste, Alexander; Klemke, Bastian; et al.; Anomalous magnetic noise in an imperfectly flat landscape in the topological magnet Dy 2 Ti 2 O 7; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 119; 5; 1-2022; 1-6
0027-8424
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.pnas.org/lookup/doi/10.1073/pnas.2117453119
info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.2117453119
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv National Academy of Sciences
publisher.none.fl_str_mv National Academy of Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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