Long decay length of magnon-polarons in BiFeO3/La0.67Sr0.33MnO3 heterostructures

Jianyu Zhang; Mingfeng Chen; Jilei Chen; Kei Yamamoto; Hanchen Wang; Mohammad Hamdi; Yuanwei Sun; Kai Wagner; Wenqing He; Yu Zhang; Ji Ma; Peng Gao; Xiufeng Han; Dapeng Yu; Patrick Maletinsky; Jean Philippe Ansermet; Sadamichi Maekawa; Dirk Grundler; Ce Wen Nan; Haiming Yu

doi:10.1038/s41467-021-27405-2

Long decay length of magnon-polarons in BiFeO₃/La_0.67Sr_0.33MnO₃ heterostructures

Jianyu Zhang
, Mingfeng Chen
, Jilei Chen
, Kei Yamamoto
, Hanchen Wang
, Mohammad Hamdi
, Yuanwei Sun
, Kai Wagner
, Wenqing He
, Yu Zhang
, Ji Ma
, Peng Gao
, Xiufeng Han
, Dapeng Yu
, Patrick Maletinsky
, Jean Philippe Ansermet
, Sadamichi Maekawa^*
, Dirk Grundler^*
, Ce Wen Nan^*
, Haiming Yu^*

^*Corresponding author for this work

School of Integrated Circuit Science and Engineering

Beihang University
Tsinghua University
Southern University of Science and Technology
Japan Atomic Energy Agency
RIKEN
Swiss Federal Institute of Technology Lausanne
Peking University
University of Basel
CAS - Institute of Physics
University of Chinese Academy of Sciences

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

27 Scopus citations

Abstract

Magnons can transfer information in metals and insulators without Joule heating, and therefore are promising for low-power computation. The on-chip magnonics however suffers from high losses due to limited magnon decay length. In metallic thin films, it is typically on the tens of micrometre length scale. Here, we demonstrate an ultra-long magnon decay length of up to one millimetre in multiferroic/ferromagnetic BiFeO₃(BFO)/La_0.67Sr_0.33MnO₃(LSMO) heterostructures at room temperature. This decay length is attributed to a magnon-phonon hybridization and is more than two orders of magnitude longer than that of bare metallic LSMO. The long-distance modes have high group velocities of 2.5 km s⁻¹ as detected by time-resolved Brillouin light scattering. Numerical simulations suggest that magnetoelastic coupling via the BFO/LSMO interface hybridizes phonons in BFO with magnons in LSMO to form magnon-polarons. Our results provide a solution to the long-standing issue on magnon decay lengths in metallic magnets and advance the bourgeoning field of hybrid magnonics.

Original language	English
Article number	7258
Journal	Nature Communications
Volume	12
Issue number	1
DOIs	https://doi.org/10.1038/s41467-021-27405-2
State	Published - Dec 2021

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Zhang, J., Chen, M., Chen, J., Yamamoto, K., Wang, H., Hamdi, M., Sun, Y., Wagner, K., He, W., Zhang, Y., Ma, J., Gao, P., Han, X., Yu, D., Maletinsky, P., Ansermet, J. P., Maekawa, S., Grundler, D., Nan, C. W., & Yu, H. (2021). Long decay length of magnon-polarons in BiFeO₃/La_0.67Sr_0.33MnO₃ heterostructures. Nature Communications, 12(1), Article 7258. https://doi.org/10.1038/s41467-021-27405-2

@article{a827972565c143708d1d812774e69d10,

title = "Long decay length of magnon-polarons in BiFeO3/La0.67Sr0.33MnO3 heterostructures",

abstract = "Magnons can transfer information in metals and insulators without Joule heating, and therefore are promising for low-power computation. The on-chip magnonics however suffers from high losses due to limited magnon decay length. In metallic thin films, it is typically on the tens of micrometre length scale. Here, we demonstrate an ultra-long magnon decay length of up to one millimetre in multiferroic/ferromagnetic BiFeO3(BFO)/La0.67Sr0.33MnO3(LSMO) heterostructures at room temperature. This decay length is attributed to a magnon-phonon hybridization and is more than two orders of magnitude longer than that of bare metallic LSMO. The long-distance modes have high group velocities of 2.5 km s−1 as detected by time-resolved Brillouin light scattering. Numerical simulations suggest that magnetoelastic coupling via the BFO/LSMO interface hybridizes phonons in BFO with magnons in LSMO to form magnon-polarons. Our results provide a solution to the long-standing issue on magnon decay lengths in metallic magnets and advance the bourgeoning field of hybrid magnonics.",

author = "Jianyu Zhang and Mingfeng Chen and Jilei Chen and Kei Yamamoto and Hanchen Wang and Mohammad Hamdi and Yuanwei Sun and Kai Wagner and Wenqing He and Yu Zhang and Ji Ma and Peng Gao and Xiufeng Han and Dapeng Yu and Patrick Maletinsky and Ansermet, \{Jean Philippe\} and Sadamichi Maekawa and Dirk Grundler and Nan, \{Ce Wen\} and Haiming Yu",

note = "Publisher Copyright: {\textcopyright} 2021, The Author(s).",

year = "2021",

month = dec,

doi = "10.1038/s41467-021-27405-2",

language = "英语",

volume = "12",

journal = "Nature Communications",

issn = "2041-1723",

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number = "1",

}

Zhang, J, Chen, M, Chen, J, Yamamoto, K, Wang, H, Hamdi, M, Sun, Y, Wagner, K, He, W, Zhang, Y, Ma, J, Gao, P, Han, X, Yu, D, Maletinsky, P, Ansermet, JP, Maekawa, S, Grundler, D, Nan, CW & Yu, H 2021, 'Long decay length of magnon-polarons in BiFeO₃/La_0.67Sr_0.33MnO₃ heterostructures', Nature Communications, vol. 12, no. 1, 7258. https://doi.org/10.1038/s41467-021-27405-2

TY - JOUR

T1 - Long decay length of magnon-polarons in BiFeO3/La0.67Sr0.33MnO3 heterostructures

AU - Zhang, Jianyu

AU - Chen, Mingfeng

AU - Chen, Jilei

AU - Yamamoto, Kei

AU - Wang, Hanchen

AU - Hamdi, Mohammad

AU - Sun, Yuanwei

AU - Wagner, Kai

AU - He, Wenqing

AU - Zhang, Yu

AU - Ma, Ji

AU - Gao, Peng

AU - Han, Xiufeng

AU - Yu, Dapeng

AU - Maletinsky, Patrick

AU - Ansermet, Jean Philippe

AU - Maekawa, Sadamichi

AU - Grundler, Dirk

AU - Nan, Ce Wen

AU - Yu, Haiming

PY - 2021/12

Y1 - 2021/12

N2 - Magnons can transfer information in metals and insulators without Joule heating, and therefore are promising for low-power computation. The on-chip magnonics however suffers from high losses due to limited magnon decay length. In metallic thin films, it is typically on the tens of micrometre length scale. Here, we demonstrate an ultra-long magnon decay length of up to one millimetre in multiferroic/ferromagnetic BiFeO3(BFO)/La0.67Sr0.33MnO3(LSMO) heterostructures at room temperature. This decay length is attributed to a magnon-phonon hybridization and is more than two orders of magnitude longer than that of bare metallic LSMO. The long-distance modes have high group velocities of 2.5 km s−1 as detected by time-resolved Brillouin light scattering. Numerical simulations suggest that magnetoelastic coupling via the BFO/LSMO interface hybridizes phonons in BFO with magnons in LSMO to form magnon-polarons. Our results provide a solution to the long-standing issue on magnon decay lengths in metallic magnets and advance the bourgeoning field of hybrid magnonics.

AB - Magnons can transfer information in metals and insulators without Joule heating, and therefore are promising for low-power computation. The on-chip magnonics however suffers from high losses due to limited magnon decay length. In metallic thin films, it is typically on the tens of micrometre length scale. Here, we demonstrate an ultra-long magnon decay length of up to one millimetre in multiferroic/ferromagnetic BiFeO3(BFO)/La0.67Sr0.33MnO3(LSMO) heterostructures at room temperature. This decay length is attributed to a magnon-phonon hybridization and is more than two orders of magnitude longer than that of bare metallic LSMO. The long-distance modes have high group velocities of 2.5 km s−1 as detected by time-resolved Brillouin light scattering. Numerical simulations suggest that magnetoelastic coupling via the BFO/LSMO interface hybridizes phonons in BFO with magnons in LSMO to form magnon-polarons. Our results provide a solution to the long-standing issue on magnon decay lengths in metallic magnets and advance the bourgeoning field of hybrid magnonics.

UR - https://www.scopus.com/pages/publications/85121327198

U2 - 10.1038/s41467-021-27405-2

DO - 10.1038/s41467-021-27405-2

M3 - 文章

C2 - 34907202

AN - SCOPUS:85121327198

SN - 2041-1723

VL - 12

JO - Nature Communications

JF - Nature Communications

IS - 1

M1 - 7258

ER -

Long decay length of magnon-polarons in BiFeO₃/La_0.67Sr_0.33MnO₃ heterostructures

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