Nonequilibrium sub–10 nm spin-wave soliton formation in FePt nanoparticles

Diego Turenne; Alexander Yaroslavtsev; Xiaocui Wang; Vivek Unikandanuni; Igor Vaskivskyi; Michael Schneider; Emmanuelle Jal; Robert Carley; Guiseppe Mercurio; Rafael Gort; Naman Agarwal; Benjamin Van Kuiken; Laurent Mercadier; Justine Schlappa; Loïc Le Guyader; Natalia Gerasimova; Martin Teichmann; David Lomidze; Andrea Castoldi; Dimitri Potorochin; Deepak Mukkattukavil; Jeffrey Brock; Nanna Zhou Hagström; Alexander H. Reid; Xiaozhe Shen; Xijie J. Wang; Pablo Maldonado; Yaroslav Kvashnin; Karel Carva; Jian Wang; Yukiko K. Takahashi; Eric E. Fullerton; Stefan Eisebitt; Peter M. Oppeneer; Serguei Molodtsov; Andreas Scherz; Stefano Bonetti; Ezio Iacocca; Hermann A. Dürr

doi:10.1126/sciadv.abn0523

Nonequilibrium sub–10 nm spin-wave soliton formation in FePt nanoparticles

Diego Turenne, Alexander Yaroslavtsev, Xiaocui Wang, Vivek Unikandanuni, Igor Vaskivskyi, Michael Schneider, Emmanuelle Jal, Robert Carley, Guiseppe Mercurio, Rafael Gort, Naman Agarwal, Benjamin Van Kuiken, Laurent Mercadier, Justine Schlappa, Loïc Le Guyader, Natalia Gerasimova, Martin Teichmann, David Lomidze, Andrea Castoldi, Dimitri PotorochinDeepak Mukkattukavil, Jeffrey Brock, Nanna Zhou Hagström, Alexander H. Reid, Xiaozhe Shen, Xijie J. Wang, Pablo Maldonado, Yaroslav Kvashnin, Karel Carva, Jian Wang, Yukiko K. Takahashi, Eric E. Fullerton, Stefan Eisebitt, Peter M. Oppeneer, Serguei Molodtsov, Andreas Scherz, Stefano Bonetti, Ezio Iacocca, Hermann A. Dürr^*

^*Corresponding author for this work

Mathematics, Physics and Electrical Engineering

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

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Abstract

Magnetic nanoparticles such as FePt in the L1 0 phase are the bedrock of our current data storage technology. As the grains become smaller to keep up with technological demands, the superparamagnetic limit calls for materials with higher magnetocrystalline anisotropy. This, in turn, reduces the magnetic exchange length to just a few nanometers, enabling magnetic structures to be induced within the nanoparticles. Here, we describe the existence of spin-wave solitons, dynamic localized bound states of spin-wave excitations, in FePt nanoparticles. We show with time-resolved x-ray diffraction and micromagnetic modeling that spin-wave solitons of sub–10 nm sizes form out of the demagnetized state following femtosecond laser excitation. The measured soliton spin precession frequency of 0.1 THz positions this system as a platform to develop novel miniature devices.

Original language	English
Article number	0523
Number of pages	10
Journal	Science Advances
Volume	8
Issue number	13
DOIs	https://doi.org/10.1126/sciadv.abn0523
Publication status	Published - 1 Apr 2022

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Turenne, D., Yaroslavtsev, A., Wang, X., Unikandanuni, V., Vaskivskyi, I., Schneider, M., Jal, E., Carley, R., Mercurio, G., Gort, R., Agarwal, N., Van Kuiken, B., Mercadier, L., Schlappa, J., Le Guyader, L., Gerasimova, N., Teichmann, M., Lomidze, D., Castoldi, A., ... Dürr, H. A. (2022). Nonequilibrium sub–10 nm spin-wave soliton formation in FePt nanoparticles. Science Advances, 8(13), Article 0523. https://doi.org/10.1126/sciadv.abn0523

@article{1abc9f2895ae4d81a3517f1f6f831f10,

title = "Nonequilibrium sub–10 nm spin-wave soliton formation in FePt nanoparticles",

abstract = "Magnetic nanoparticles such as FePt in the L1 0 phase are the bedrock of our current data storage technology. As the grains become smaller to keep up with technological demands, the superparamagnetic limit calls for materials with higher magnetocrystalline anisotropy. This, in turn, reduces the magnetic exchange length to just a few nanometers, enabling magnetic structures to be induced within the nanoparticles. Here, we describe the existence of spin-wave solitons, dynamic localized bound states of spin-wave excitations, in FePt nanoparticles. We show with time-resolved x-ray diffraction and micromagnetic modeling that spin-wave solitons of sub–10 nm sizes form out of the demagnetized state following femtosecond laser excitation. The measured soliton spin precession frequency of 0.1 THz positions this system as a platform to develop novel miniature devices.",

author = "Diego Turenne and Alexander Yaroslavtsev and Xiaocui Wang and Vivek Unikandanuni and Igor Vaskivskyi and Michael Schneider and Emmanuelle Jal and Robert Carley and Guiseppe Mercurio and Rafael Gort and Naman Agarwal and {Van Kuiken}, Benjamin and Laurent Mercadier and Justine Schlappa and {Le Guyader}, Lo{\"i}c and Natalia Gerasimova and Martin Teichmann and David Lomidze and Andrea Castoldi and Dimitri Potorochin and Deepak Mukkattukavil and Jeffrey Brock and {Zhou Hagstr{\"o}m}, Nanna and Reid, {Alexander H.} and Xiaozhe Shen and Wang, {Xijie J.} and Pablo Maldonado and Yaroslav Kvashnin and Karel Carva and Jian Wang and Takahashi, {Yukiko K.} and Fullerton, {Eric E.} and Stefan Eisebitt and Oppeneer, {Peter M.} and Serguei Molodtsov and Andreas Scherz and Stefano Bonetti and Ezio Iacocca and D{\"u}rr, {Hermann A.}",

note = "Funding information: We acknowledge the European XFEL in Schenefeld, Germany, for provision of x-ray free-electron laser beam time at Scientific Instrument SCS and thank the instrument group and facility staff for their assistance. D.T., X.W., and H.A.D. acknowledge support from the Swedish Research Council (VR), grants 2017-06711 and 2018-04918. A.Y. acknowledges support from the Carl Trygger Foundation. V.U., N.Z.H., and S.B. acknowledge support from the European Research Council, Starting Grant 715452 Magnetic-Speed-Limit. E.J. is grateful for the financial support received from the CNRS-Momentum program. K.C. acknowledges support from the Czech Science Foundation (grant no. 19-13659S). P.M.O. acknowledges support by the Swedish Research Council (VR). Part of the calculations were enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC) at NSC Link{\"o}ping, partially funded by VR through grant agreement no. 2018-05973. Y.K. acknowledges the financial support from VR (grant 2019-03569) and G{\"o}ran Gustafsson Foundation. J.B. and E.E.F. acknowledge support by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES) under the X-Ray Scattering Program award number DE-SC0017643. Work at the SLAC MeV-UED is supported in part by the DOE BES SUF Division Accelerator and Detector R&D program, the LCLS Facility, and SLAC under contract nos. DE-AC02-05-CH11231 and DE-AC02-76SF00515.",

year = "2022",

month = apr,

day = "1",

doi = "10.1126/sciadv.abn0523",

language = "English",

volume = "8",

journal = "Science Advances",

issn = "2375-2548",

publisher = "American Association for the Advancement of Science",

number = "13",

}

Turenne, D, Yaroslavtsev, A, Wang, X, Unikandanuni, V, Vaskivskyi, I, Schneider, M, Jal, E, Carley, R, Mercurio, G, Gort, R, Agarwal, N, Van Kuiken, B, Mercadier, L, Schlappa, J, Le Guyader, L, Gerasimova, N, Teichmann, M, Lomidze, D, Castoldi, A, Potorochin, D, Mukkattukavil, D, Brock, J, Zhou Hagström, N, Reid, AH, Shen, X, Wang, XJ, Maldonado, P, Kvashnin, Y, Carva, K, Wang, J, Takahashi, YK, Fullerton, EE, Eisebitt, S, Oppeneer, PM, Molodtsov, S, Scherz, A, Bonetti, S, Iacocca, E & Dürr, HA 2022, 'Nonequilibrium sub–10 nm spin-wave soliton formation in FePt nanoparticles', Science Advances, vol. 8, no. 13, 0523. https://doi.org/10.1126/sciadv.abn0523

TY - JOUR

T1 - Nonequilibrium sub–10 nm spin-wave soliton formation in FePt nanoparticles

AU - Turenne, Diego

AU - Yaroslavtsev, Alexander

AU - Wang, Xiaocui

AU - Unikandanuni, Vivek

AU - Vaskivskyi, Igor

AU - Schneider, Michael

AU - Jal, Emmanuelle

AU - Carley, Robert

AU - Mercurio, Guiseppe

AU - Gort, Rafael

AU - Agarwal, Naman

AU - Van Kuiken, Benjamin

AU - Mercadier, Laurent

AU - Schlappa, Justine

AU - Le Guyader, Loïc

AU - Gerasimova, Natalia

AU - Teichmann, Martin

AU - Lomidze, David

AU - Castoldi, Andrea

AU - Potorochin, Dimitri

AU - Mukkattukavil, Deepak

AU - Brock, Jeffrey

AU - Zhou Hagström, Nanna

AU - Reid, Alexander H.

AU - Shen, Xiaozhe

AU - Wang, Xijie J.

AU - Maldonado, Pablo

AU - Kvashnin, Yaroslav

AU - Carva, Karel

AU - Wang, Jian

AU - Takahashi, Yukiko K.

AU - Fullerton, Eric E.

AU - Eisebitt, Stefan

AU - Oppeneer, Peter M.

AU - Molodtsov, Serguei

AU - Scherz, Andreas

AU - Bonetti, Stefano

AU - Iacocca, Ezio

AU - Dürr, Hermann A.

N1 - Funding information: We acknowledge the European XFEL in Schenefeld, Germany, for provision of x-ray free-electron laser beam time at Scientific Instrument SCS and thank the instrument group and facility staff for their assistance. D.T., X.W., and H.A.D. acknowledge support from the Swedish Research Council (VR), grants 2017-06711 and 2018-04918. A.Y. acknowledges support from the Carl Trygger Foundation. V.U., N.Z.H., and S.B. acknowledge support from the European Research Council, Starting Grant 715452 Magnetic-Speed-Limit. E.J. is grateful for the financial support received from the CNRS-Momentum program. K.C. acknowledges support from the Czech Science Foundation (grant no. 19-13659S). P.M.O. acknowledges support by the Swedish Research Council (VR). Part of the calculations were enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC) at NSC Linköping, partially funded by VR through grant agreement no. 2018-05973. Y.K. acknowledges the financial support from VR (grant 2019-03569) and Göran Gustafsson Foundation. J.B. and E.E.F. acknowledge support by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES) under the X-Ray Scattering Program award number DE-SC0017643. Work at the SLAC MeV-UED is supported in part by the DOE BES SUF Division Accelerator and Detector R&D program, the LCLS Facility, and SLAC under contract nos. DE-AC02-05-CH11231 and DE-AC02-76SF00515.

PY - 2022/4/1

Y1 - 2022/4/1

N2 - Magnetic nanoparticles such as FePt in the L1 0 phase are the bedrock of our current data storage technology. As the grains become smaller to keep up with technological demands, the superparamagnetic limit calls for materials with higher magnetocrystalline anisotropy. This, in turn, reduces the magnetic exchange length to just a few nanometers, enabling magnetic structures to be induced within the nanoparticles. Here, we describe the existence of spin-wave solitons, dynamic localized bound states of spin-wave excitations, in FePt nanoparticles. We show with time-resolved x-ray diffraction and micromagnetic modeling that spin-wave solitons of sub–10 nm sizes form out of the demagnetized state following femtosecond laser excitation. The measured soliton spin precession frequency of 0.1 THz positions this system as a platform to develop novel miniature devices.

AB - Magnetic nanoparticles such as FePt in the L1 0 phase are the bedrock of our current data storage technology. As the grains become smaller to keep up with technological demands, the superparamagnetic limit calls for materials with higher magnetocrystalline anisotropy. This, in turn, reduces the magnetic exchange length to just a few nanometers, enabling magnetic structures to be induced within the nanoparticles. Here, we describe the existence of spin-wave solitons, dynamic localized bound states of spin-wave excitations, in FePt nanoparticles. We show with time-resolved x-ray diffraction and micromagnetic modeling that spin-wave solitons of sub–10 nm sizes form out of the demagnetized state following femtosecond laser excitation. The measured soliton spin precession frequency of 0.1 THz positions this system as a platform to develop novel miniature devices.

UR - http://www.scopus.com/inward/record.url?scp=85127511489&partnerID=8YFLogxK

U2 - 10.1126/sciadv.abn0523

DO - 10.1126/sciadv.abn0523

M3 - Article

SN - 2375-2548

VL - 8

JO - Science Advances

JF - Science Advances

IS - 13

M1 - 0523

ER -

Nonequilibrium sub–10 nm spin-wave soliton formation in FePt nanoparticles

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