Nonreciprocal coherent coupling of nanomagnets by exchange spin waves

Wang，Hanchen1; Chen，Jilei1; Yu，Tao2; Liu，Chuanpu1; Guo，Chenyang3; Liu，Song4; Shen，Ka5; Jia，Hao4; Liu，Tao6; Zhang，Jianyu1; Cabero，Marco A.1,4; Song，Qiuming4; Tu，Sa1; Wu，Mingzhong6; Han，Xiufeng3; Xia，Ke4; Yu，Dapeng4; Bauer，Gerrit E.W.7,8,9; Yu，Haiming1

2020

10.1007/s12274-020-3251-5

Nano Research   影响因子和分区

1998-0124

1998-0000

Nanomagnets are widely used to store information in non-volatile spintronic devices. Spin waves can transfer information with low-power consumption as their propagations are independent of charge transport. However, to dynamically couple two distant nanomagnets via spin waves remains a major challenge for magnonics. Here we experimentally demonstrate coherent coupling of two distant Co nanowires by fast propagating spin waves in an yttrium iron garnet thin film with sub-50 nm wavelengths. Magnons in two nanomagnets are unidirectionally phase-locked with phase shifts controlled by magnon spin torque and spin-wave propagation. The coupled system is finally formulated by an analytical theory in terms of an effective non-Hermitian Hamiltonian. Our results are attractive for analog neuromorphic computing that requires unidirectional information transmission. [Figure not available: see fulltext.]

coherent coupling nanomagnets nonreciprocity spin waves spintronics

SCI ; EI

英语

其他

National Key Research and Development Program of China["2016YFA0300802","2017YFA0206200","2017YFA0303304","2018YFB0407601"] ; National Natural Science Foundation of China (NSFC)[11674020,12074026,"U1801661"] ; 111 talent program[B16001] ; Japan Society for the Promotion of Science Kakenhi[19H006450] ; Emmy Noether Program of Deutsche Forschungsgemeinschaft[SE 2558/2-1] ; National Natural Science Foundation of China[61774017,11734004] ; Fundamental Research Funds for the Central Universities[2018EYT02] ; US National Science Foundation[EFMA-1641989]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000603189600002

TSINGHUA UNIV PRESS

20205309699642

Nanomagnetics ; Crack propagation ; Computation theory ; Hamiltonians ; Wave propagation

Magnetism: Basic Concepts and Phenomena:701.2 ; Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory:721.1 ; Materials Science:951

2-s2.0-85098112511

Scopus

1.Fert Beijing Institute,School of Integrated Circuit Science and Engineering,Beijing Advanced Innovation Center for Big Data and Brain Computing,Beihang University,Beijing,100191,China
2.Max Planck Institute for the Structure and Dynamics of Matter,Hamburg,22761,Germany
3.Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,University of Chinese Academy of Sciences,Chinese Academy of Sciences,Beijing,100190,China
4.Shenzhen Institute for Quantum Science and Engineering (SIQSE),and Department of Physics,Southern University of Science and Technology (SUSTech),Shenzhen,518055,China
5.Department of Physics,Beijing Normal University,Beijing,100875,China
6.Department of Physics,Colorado State University,Fort Collins,80523,United States
7.Kavli Institute of Nanoscience,Delft University of Technology,Delft,2628 CJ,Netherlands
8.Institute for Materials Research,WPI-AIMR and CSNR,Tohoku University,Sendai,980-8577,Japan
9.Zernike Institute for Advanced Materials,University of Groningen,Groningen,Groningen,Nijenborgh 4,9747 AG,Netherlands

Wang，Hanchen,Chen，Jilei,Yu，Tao,et al. Nonreciprocal coherent coupling of nanomagnets by exchange spin waves[J]. Nano Research,2020,14:2133-2138.

Wang，Hanchen.,Chen，Jilei.,Yu，Tao.,Liu，Chuanpu.,Guo，Chenyang.,...&Yu，Haiming.(2020).Nonreciprocal coherent coupling of nanomagnets by exchange spin waves.Nano Research,14,2133-2138.

Wang，Hanchen,et al."Nonreciprocal coherent coupling of nanomagnets by exchange spin waves".Nano Research 14(2020):2133-2138.