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

Zhang, Jianyu1; Chen, Mingfeng2; Chen, Jilei1,3; Yamamoto, Kei4,5; Wang, Hanchen1; Hamdi, Mohammad6; Sun, Yuanwei7,8,9,10; Wagner, Kai11; He, Wenqing12; Zhang, Yu12; Ma, Ji2; Gao, Peng7,8,9,10; Han, Xiufeng12; Yu, Dapeng3; Maletinsky, Patrick11; Ansermet, Jean-Philippe13; Maekawa, Sadamichi5,14; Grundler, Dirk6,15; Nan, Ce-Wen2; Yu, Haiming1

2021-12-14

10.1038/s41467-021-27405-2

NATURE COMMUNICATIONS   影响因子和分区

2041-1723

["Long-distance magnon transport is highly desired for magnonics. Here, the authors demonstrate a millimetre-long magnon decay length in multiferroic heterostructures, which is attributed to magnon-polarons induced by the magnetoelastic coupling.","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."]

SCI

英语

NI论文

其他

National Natural Science Foundation of China[12074026,"U1801661"] ; 111 talent program[B16001] ; National Key Research and Development Program of China["2016YFA0300802","2017YFA0206200"] ; Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology[SIQSE202007] ; Basic Science Center Program of NSFC[51788104] ; Key-Area Research and Development Program of Guangdong Province["2018B030327001","2018B010109009"] ; JST, PRESTO, Japan[JPMJPR20LB] ; JSPS KAKENHI["19K21040","21K13886"] ; JST CREST Grant["JPMJCR19J4","JPMJCR1874","JPMJCR20C1"] ; JSPS KAKENHI from MEXT, Japan["17H02927","20H01865"] ; Japan Atomic Energy Agency[HPE SGI8600] ; SNSF[177550]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:000730391400004

NATURE PORTFOLIO

Web of Science

1.Beihang Univ, Sch Integrated Circuit Sci & Engn, Fert Beijing Inst, MIIT Key Lab Spintron, Beijing, Peoples R China
2.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen, Peoples R China
4.Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
5.RIKEN, Ctr Emergent Matter Sci, Wako, Saitama, Japan
6.Ecole Polytech Fed Lausanne EPFL, Lab Nanoscale Magnet Mat & Magnon, Inst Mat, Lausanne, Switzerland
7.Peking Univ, Sch Phys, Interdisciplinary Inst Light Element Quantum Mat, Beijing, Peoples R China
8.Peking Univ, Res Ctr Light Element Adv Mat, Sch Phys, Beijing, Peoples R China
9.Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing, Peoples R China
10.Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing, Peoples R China
11.Univ Basel, Dept Phys, Basel, Switzerland
12.Chinese Acad Sci, Univ Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing, Peoples R China
13.Ecole Polytech Fed Lausanne EPFL, Inst Phys, Lausanne, Switzerland
14.Univ Chinese Acad Sci, Kavli Inst Theoret Sci, Beijing, Peoples R China
15.Ecole Polytech Fed Lausanne EPFL, Inst Elect & Micro Engn, Lausanne, Switzerland

Zhang, Jianyu,Chen, Mingfeng,Chen, Jilei,et al. Long decay length of magnon-polarons in BiFeO3/La0.67Sr0.33MnO3 heterostructures[J]. NATURE COMMUNICATIONS,2021,12(1).

Zhang, Jianyu.,Chen, Mingfeng.,Chen, Jilei.,Yamamoto, Kei.,Wang, Hanchen.,...&Yu, Haiming.(2021).Long decay length of magnon-polarons in BiFeO3/La0.67Sr0.33MnO3 heterostructures.NATURE COMMUNICATIONS,12(1).

Zhang, Jianyu,et al."Long decay length of magnon-polarons in BiFeO3/La0.67Sr0.33MnO3 heterostructures".NATURE COMMUNICATIONS 12.1(2021).