Correlation-driven eightfold magnetic anisotropy in a two-dimensional oxide monolayer
Cui, Zhangzhang1,2; Grutter, Alexander J.3; Zhou, Hua4; Cao, Hui1,2,4; Dong, Yongqi1,4; Gilbert, Dustin A.3,5; Wang, Jingyuan6; Liu, Yi-Sheng7; Ma, Jiaji8; Hu, Zhenpeng9
2020-04
发表期刊SCIENCE ADVANCES
ISSN2375-2548
卷号6期号:15
发表状态已发表
DOI10.1126/sciadv.aay0114
摘要Engineering magnetic anisotropy in two-dimensional systems has enormous scientific and technological implications. The uniaxial anisotropy universally exhibited by two-dimensional magnets has only two stable spin directions, demanding 180 degrees spin switching between states. We demonstrate a previously unobserved eightfold anisotropy in magnetic SrRuO3 monolayers by inducing a spin reorientation in (SrRuO3)(l)/(SrTiO3)(N) superlattices, in which the magnetic easy axis of Ru spins is transformed from uniaxial (001) direction (N < 3) to eightfold (111) directions (N >= 3). This eightfold anisotropy enables 71 degrees and 109 degrees spin switching in SrRuO3 monolayers, analogous to 71 degrees and 109 degrees polarization switching in ferroelectric BiFeO3. First-principle calculations reveal that increasing the SrTiO3 layer thickness induces an emergent correlation-driven orbital ordering, tuning spin-orbit interactions and reorienting the SrRuO3 monolayer easy axis. Our work demonstrates that correlation effects can be exploited to substantially change spin-orbit interactions, stabilizing unprecedented properties in two-dimensional magnets and opening rich opportunities for low-power, multistate device applications.
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收录类别SCI ; SCIE ; EI
语种英语
资助项目Shanghai Pujiang Talents Program[17PJ1407300]
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000525751400010
出版者AMER ASSOC ADVANCEMENT SCIENCE
EI入藏号20201608427365
EI主题词Bismuth compounds ; Iron compounds ; Magnetism ; Magnets ; Monolayers ; Ruthenium compounds ; Spin orbit coupling ; Strontium titanates ; Titanium compounds
EI分类号Magnetism: Basic Concepts and Phenomena:701.2 ; Chemical Products Generally:804
WOS关键词WEAK FERROMAGNETISM ; SUPERCONDUCTIVITY ; HETEROSTRUCTURES ; COEXISTENCE ; ORDER ; SPIN
原始文献类型Article
引用统计
文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/119388
专题物质科学与技术学院_PI研究组_翟晓芳组
通讯作者Chen, Hanghui; Zhai, Xiaofang
作者单位1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China
2.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China
3.NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA
4.Argonne Natl Lab, Adv Photon Source, Lemont, IL 60439 USA
5.Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
6.Univ Calif Irvine, Dept Phys, Irvine, CA 92697 USA
7.Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA
8.NYU Shanghai, NYU ECNU Inst Phys, Shanghai 200122, Peoples R China
9.Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China
10.Cornell Univ, Cornell High Energy Synchrotron Source, Ithaca, NY 14853 USA
通讯作者单位物质科学与技术学院
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GB/T 7714
Cui, Zhangzhang,Grutter, Alexander J.,Zhou, Hua,et al. Correlation-driven eightfold magnetic anisotropy in a two-dimensional oxide monolayer[J]. SCIENCE ADVANCES,2020,6(15).
APA Cui, Zhangzhang.,Grutter, Alexander J..,Zhou, Hua.,Cao, Hui.,Dong, Yongqi.,...&Lu, Yalin.(2020).Correlation-driven eightfold magnetic anisotropy in a two-dimensional oxide monolayer.SCIENCE ADVANCES,6(15).
MLA Cui, Zhangzhang,et al."Correlation-driven eightfold magnetic anisotropy in a two-dimensional oxide monolayer".SCIENCE ADVANCES 6.15(2020).
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