Perpendicular Magnetic Anisotropy and Dzyaloshinskii-Moriya Interaction at an Oxide/Ferromagnetic Metal Interface

doi:10.1103/PhysRevLett.124.217202

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Perpendicular Magnetic Anisotropy and Dzyaloshinskii-Moriya Interaction at an Oxide/Ferromagnetic Metal Interface
	Lin, Weinan ; Yang, Baishun ; Chen, Andy Paul ; Wu, Xiaohan ; Guo, Rui ; Chen, Shaohai ; Liu, Liang ; Xie, Qidong ; Shu, Xinyu ; Hui, Yajuan
刊名	PHYSICAL REVIEW LETTERS
	2020
卷号	124 期号:21
关键词	TOTAL-ENERGY CALCULATIONS MULTILAYERS EXCHANGE DYNAMICS
DOI	10.1103/PhysRevLett.124.217202
英文摘要	We report on the study of both perpendicular magnetic anisotropy (PMA) and Dzyaloshinskii-Moriya interaction (DMI) at an oxide/ferromagnetic metal (FM) interface, i.e., BaTiO3 (BTO)/CoFeB. Thanks to the functional properties of the BTO film and the capability to precisely control its growth, we are able to distinguish the dominant role of the oxide termination (TiO2 vs BaO) from the moderate effect of ferroelectric polarization in the BTO film, on the PMA and DMI at an oxide/FM interface. We find that the interfacial magnetic anisotropy energy of the BaO-BTO/CoFeB structure is 2 times larger than that of the TiO2-BTO/CoFeB, while the DMI of the TiO2-BTO/CoFeB interface is larger. We explain the observed phenomena by first principles calculations, which ascribe them to the different electronic states around the Fermi level at oxide/ferromagnetic metal interfaces and the different spin-flip process. This study paves the way for further investigation of the PMA and DMI at various oxide/FM structures and thus their applications in the promising field of energy-efficient devices.
学科主题	Physics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20784]
专题	2020专题
作者单位	1.Chen, JS (corresponding author), Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore. 2.Yang, HX (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 3.Yang, HX (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China. 4.Chen, JS (corresponding author), Natl Univ Singapore, NUS Grad Sch Integrat Sci & Engn, Singapore 117456, Singapore. 5.Tacchi, S (corresponding author), Univ Perugia, IOM, Sede Secondaria Perugia, CNR,Dipartimento Fis & Geol, I-06123 Perugia, Italy.
推荐引用方式 GB/T 7714	Lin, Weinan,Yang, Baishun,Chen, Andy Paul,et al. Perpendicular Magnetic Anisotropy and Dzyaloshinskii-Moriya Interaction at an Oxide/Ferromagnetic Metal Interface[J]. PHYSICAL REVIEW LETTERS,2020,124(21).
APA	Lin, Weinan.,Yang, Baishun.,Chen, Andy Paul.,Wu, Xiaohan.,Guo, Rui.,...&Chen, Jingsheng.(2020).Perpendicular Magnetic Anisotropy and Dzyaloshinskii-Moriya Interaction at an Oxide/Ferromagnetic Metal Interface.PHYSICAL REVIEW LETTERS,124(21).
MLA	Lin, Weinan,et al."Perpendicular Magnetic Anisotropy and Dzyaloshinskii-Moriya Interaction at an Oxide/Ferromagnetic Metal Interface".PHYSICAL REVIEW LETTERS 124.21(2020).