Size effect on single pulse all-optical helicity-independent switching in GdFeCo disk arrays

Danny Petty Gweha Nyoma; Maxime Vergès; Michel Hehn; Daniel Lacour; Julius Hohlfeld; Sebastiaan van Dijken; Grégory Malinowski; Stéphane Mangin; François Montaigne

doi:10.1063/5.0150250

Size effect on single pulse all-optical helicity-independent switching in GdFeCo disk arrays

Danny Petty Gweha Nyoma, Maxime Vergès, Michel Hehn, Daniel Lacour, Julius Hohlfeld, Sebastiaan van Dijken, Grégory Malinowski, Stéphane Mangin, François Montaigne^*

^*Corresponding author for this work

Université de Lorraine

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

We experimentally demonstrate single pulse toggle switching of the magnetization of GdFeCo disks with perpendicular to film plane anisotropy, which diameter ranges from 3 μm to 400 nm using 35 fs linearly polarized laser pulses. Two different magnetic states can be observed depending on the laser fluence: either a deterministic switching of the disk magnetization or a randomly oriented disk. We report that the fluence required to observe both magnetic states show a non-monotonic behavior with disk diameter and that the smallest disks require the lowest minimum fluence for achieving single pulse all-optical helicity-independent switching. Different evolution of the fluence thresholds for both phenomenon as a function of the disk size is observed and discussed.

Original language	English
Article number	052405
Journal	Applied Physics Letters
Volume	123
Issue number	5
DOIs	https://doi.org/10.1063/5.0150250
Publication status	Published - 31 Jul 2023
MoE publication type	A1 Journal article-refereed

Funding

This work was supported partly by the French PIA project “Lorraine Université d'Excellence” (No. ANR-15-IDEX-04-LUE) and by the “FEDER-FSE Lorraine et Massif Vosges 2014–2020,” a European Union Program (RaNGE project). This work was supported by the No. ANR-20-CE09-0013 UFO, by the Institute Carnot ICEEL for the project “CAPMAT” and FASTNESS, by the Région Grand Est, by the Metropole Grand Nancy, for the Chaire PLUS by the European Union's Horizon 2020 research and innovation program COMRAD under the Marie Skłodowska-Curie Grant Agreement No. 861300, and by the Academy of Finland (Grant No. 316857). This article is based upon work from COST Action CA17123 MAGNETOFON, supported by COST (European Cooperation in Science and Technology). Devices in the present study were patterned at MiNaLor clean-room platform, which is partially supported by FEDER and Grand Est Region through the RaNGE project.

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Size effect on single pulse all-optical helicity-independent switching in GdFeCo disk arraysFinal published version, 2.51 MB

Cite this

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title = "Size effect on single pulse all-optical helicity-independent switching in GdFeCo disk arrays",

abstract = "We experimentally demonstrate single pulse toggle switching of the magnetization of GdFeCo disks with perpendicular to film plane anisotropy, which diameter ranges from 3 μm to 400 nm using 35 fs linearly polarized laser pulses. Two different magnetic states can be observed depending on the laser fluence: either a deterministic switching of the disk magnetization or a randomly oriented disk. We report that the fluence required to observe both magnetic states show a non-monotonic behavior with disk diameter and that the smallest disks require the lowest minimum fluence for achieving single pulse all-optical helicity-independent switching. Different evolution of the fluence thresholds for both phenomenon as a function of the disk size is observed and discussed.",

author = "\{Gweha Nyoma\}, \{Danny Petty\} and Maxime Verg{\`e}s and Michel Hehn and Daniel Lacour and Julius Hohlfeld and \{van Dijken\}, Sebastiaan and Gr{\'e}gory Malinowski and St{\'e}phane Mangin and Fran{\c c}ois Montaigne",

note = "Funding Information: This work was supported partly by the French PIA project “Lorraine Universit{\'e} d'Excellence” (No. ANR-15-IDEX-04-LUE) and by the “FEDER-FSE Lorraine et Massif Vosges 2014–2020,” a European Union Program (RaNGE project). This work was supported by the No. ANR-20-CE09-0013 UFO, by the Institute Carnot ICEEL for the project “CAPMAT” and FASTNESS, by the R{\'e}gion Grand Est, by the Metropole Grand Nancy, for the Chaire PLUS by the European Union's Horizon 2020 research and innovation program COMRAD under the Marie Sk{\l}odowska-Curie Grant Agreement No. 861300, and by the Academy of Finland (Grant No. 316857). This article is based upon work from COST Action CA17123 MAGNETOFON, supported by COST (European Cooperation in Science and Technology). Devices in the present study were patterned at MiNaLor clean-room platform, which is partially supported by FEDER and Grand Est Region through the RaNGE project. Publisher Copyright: {\textcopyright} 2023 Author(s).",

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month = jul,

day = "31",

doi = "10.1063/5.0150250",

language = "English",

volume = "123",

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T1 - Size effect on single pulse all-optical helicity-independent switching in GdFeCo disk arrays

AU - Gweha Nyoma, Danny Petty

AU - Vergès, Maxime

AU - Hehn, Michel

AU - Lacour, Daniel

AU - Hohlfeld, Julius

AU - van Dijken, Sebastiaan

AU - Malinowski, Grégory

AU - Mangin, Stéphane

AU - Montaigne, François

N1 - Funding Information: This work was supported partly by the French PIA project “Lorraine Université d'Excellence” (No. ANR-15-IDEX-04-LUE) and by the “FEDER-FSE Lorraine et Massif Vosges 2014–2020,” a European Union Program (RaNGE project). This work was supported by the No. ANR-20-CE09-0013 UFO, by the Institute Carnot ICEEL for the project “CAPMAT” and FASTNESS, by the Région Grand Est, by the Metropole Grand Nancy, for the Chaire PLUS by the European Union's Horizon 2020 research and innovation program COMRAD under the Marie Skłodowska-Curie Grant Agreement No. 861300, and by the Academy of Finland (Grant No. 316857). This article is based upon work from COST Action CA17123 MAGNETOFON, supported by COST (European Cooperation in Science and Technology). Devices in the present study were patterned at MiNaLor clean-room platform, which is partially supported by FEDER and Grand Est Region through the RaNGE project. Publisher Copyright: © 2023 Author(s).

PY - 2023/7/31

Y1 - 2023/7/31

N2 - We experimentally demonstrate single pulse toggle switching of the magnetization of GdFeCo disks with perpendicular to film plane anisotropy, which diameter ranges from 3 μm to 400 nm using 35 fs linearly polarized laser pulses. Two different magnetic states can be observed depending on the laser fluence: either a deterministic switching of the disk magnetization or a randomly oriented disk. We report that the fluence required to observe both magnetic states show a non-monotonic behavior with disk diameter and that the smallest disks require the lowest minimum fluence for achieving single pulse all-optical helicity-independent switching. Different evolution of the fluence thresholds for both phenomenon as a function of the disk size is observed and discussed.

AB - We experimentally demonstrate single pulse toggle switching of the magnetization of GdFeCo disks with perpendicular to film plane anisotropy, which diameter ranges from 3 μm to 400 nm using 35 fs linearly polarized laser pulses. Two different magnetic states can be observed depending on the laser fluence: either a deterministic switching of the disk magnetization or a randomly oriented disk. We report that the fluence required to observe both magnetic states show a non-monotonic behavior with disk diameter and that the smallest disks require the lowest minimum fluence for achieving single pulse all-optical helicity-independent switching. Different evolution of the fluence thresholds for both phenomenon as a function of the disk size is observed and discussed.

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M3 - Article

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JO - Applied Physics Letters

JF - Applied Physics Letters

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Size effect on single pulse all-optical helicity-independent switching in GdFeCo disk arrays

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Ionic control of electronic, magnetic, and plasmonic nanomaterials

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Size effect on single pulse all-optical helicity-independent switching in GdFeCo disk arrays

Abstract

Funding

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Ionic control of electronic, magnetic, and plasmonic nanomaterials

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