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; Guo, Jinghua7; Xia, Jing6; Kirby, Brian J.3; Shafer, Padraic7; Arenholz, Elke7,10; Chen, Hanghui8,11,12; Zhai, Xiaofang1,2,13; Lu, Yalin1,2
Source PublicationSCIENCE ADVANCES
AbstractEngineering 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.
Indexed BySCI ; EI
Funding ProjectShanghai Pujiang Talents Program[17PJ1407300]
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000525751400010
EI Accession Number20201608427365
EI KeywordsBismuth compounds ; Iron compounds ; Magnetism ; Magnets ; Monolayers ; Ruthenium compounds ; Spin orbit coupling ; Strontium titanates ; Titanium compounds
EI Classification NumberMagnetism: Basic Concepts and Phenomena:701.2 ; Chemical Products Generally:804
Original Document TypeArticle
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Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorChen, Hanghui; Zhai, Xiaofang
Affiliation1.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
11.East China Normal Univ, Sch Phys & Mat Sci, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
12.NYU, Dept Phys, New York, NY 10027 USA
13.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
Corresponding Author AffilicationSchool of Physical Science and Technology
Recommended Citation
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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