Anisotropic Magnon-Magnon Coupling in Synthetic Antiferromagnets

doi:10.1088/0256-307X/38/5/057502

CORC > 金属研究所 > 中国科学院金属研究所

	Anisotropic Magnon-Magnon Coupling in Synthetic Antiferromagnets
	He, Wei 1,2; Xie, Z. K.1,2; Sun, Rui 1,2; Yang, Meng 1,2; Li, Yang 1,2; Zhao, Xiao-Tian 3; Liu, Wei 3; Zhang, Z. D.3; Cai, Jian-Wang 1,2; Cheng, Zhao-Hua 1,2
刊名	CHINESE PHYSICS LETTERS
	2021-06-01
卷号	38 期号:5 页码:6
ISSN号	0256-307X
DOI	10.1088/0256-307X/38/5/057502
通讯作者	He, Wei(hewei@iphy.ac.cn) ; Zhao, Xiao-Tian(xtzhao@imr.ac.cn) ; Lu, Jie(jlu@yzu.edu.cn)
英文摘要	Magnon-magnon coupling in synthetic antiferromagnets advances it as hybrid magnonic systems to explore the quantum information technologies. To induce magnon-magnon coupling, the parity symmetry between two magnetization needs to be broken. Here we experimentally demonstrate a convenient method to break the parity symmetry by the asymmetric structure. We successfully introduce a magnon-magnon coupling in Ir-based synthetic antiferromagnets CoFeB(10 nm)/Ir(t (Ir) = 0.6 nm, 1.2 nm)/CoFeB(13 nm). Remarkably, we find that the weakly uniaxial anisotropy field (similar to 20 Oe) makes the magnon-magnon coupling anisotropic. The coupling strength presented by a characteristic anticrossing gap varies in the range between 0.54 GHz and 0.90 GHz for t (Ir) = 0.6 nm, and between 0.09 GHz and 1.4 GHz for t (Ir) = 1.2 nm. Our results demonstrate a feasible way to induce magnon-magnon coupling by an asymmetric structure and tune the coupling strength by varying the direction of in-plane magnetic field. The magnon-magnon coupling in this highly tunable material system could open exciting perspectives for exploring quantum-mechanical coupling phenomena.
资助项目	National Natural Science Foundation of China[51871235] ; National Natural Science Foundation of China[51671212] ; National Natural Science Foundation of China[52031014] ; National Natural Science Foundation of China[51771198] ; National Natural Science Foundation of China[51801212] ; National Key Research and Development Program of China[2016YFA0300701] ; National Key Research and Development Program of China[2017YFB0702702] ; National Key Research and Development Program of China[2017YA0206302] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC023] ; Key Research Program of Frontier Sciences, CAS[KJZD-SW-M01] ; Key Research Program of Frontier Sciences, CAS[ZDYZ2012-2] ; Natural Science Foundation for Distinguished Young Scholars of Hebei Province of China (S&T Program of Hebei)[A2019205310]
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000657955500001
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Key Research Program of Frontier Sciences, CAS ; Natural Science Foundation for Distinguished Young Scholars of Hebei Province of China (S&T Program of Hebei)
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/160271]
专题	金属研究所_中国科学院金属研究所
通讯作者	He, Wei; Zhao, Xiao-Tian; Lu, Jie
作者单位	1.Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Hebei Normal Univ, Coll Phys, Shijiazhuang 050024, Hebei, Peoples R China 5.Hebei Normal Univ, Hebei Adv Thin Films Lab, Shijiazhuang 050024, Hebei, Peoples R China
推荐引用方式 GB/T 7714	He, Wei,Xie, Z. K.,Sun, Rui,et al. Anisotropic Magnon-Magnon Coupling in Synthetic Antiferromagnets[J]. CHINESE PHYSICS LETTERS,2021,38(5):6.
APA	He, Wei.,Xie, Z. K..,Sun, Rui.,Yang, Meng.,Li, Yang.,...&Lu, Jie.(2021).Anisotropic Magnon-Magnon Coupling in Synthetic Antiferromagnets.CHINESE PHYSICS LETTERS,38(5),6.
MLA	He, Wei,et al."Anisotropic Magnon-Magnon Coupling in Synthetic Antiferromagnets".CHINESE PHYSICS LETTERS 38.5(2021):6.