Proximity-Induced Fully Ferromagnetic Order with Eightfold Magnetic Anisotropy in Heavy Transition Metal Oxide CaRuO3

Zhang，Jine1,2; Chen，Xiaobing3; Wang，Mengqin2,4; Zhang，Qinghua2; Shi，Wenxiao2,4; Zhan，Xiaozhi5; Zhao，Meng1; Li，Zhe2,4; Zheng，Jie2,4; Zhang，Hui1; Han，Furong1; Yang，Huaiwen1; Zhu，Tao2,5; Liu，Banggui2; Hu，Fengxia2,4,6; Shen，Baogen2,4,7; Chen，Yuansha2,8; Zhang，Yue1; Chen，Yunzhong2,4; Zhao，Weisheng1; Sun，Jirong2,4,6

2023

10.1002/adfm.202306434

Advanced Functional Materials   Impact Factor & Quartile

1616-301X

1616-3028

Ferromagnetic materials with a strong spin-orbit coupling (SOC) have attracted much attention in recent years because of their exotic properties and potential applications in energy-efficient spintronics. However, such materials are scarce in nature. Here, a proximity-induced paramagnetic to ferromagnetic transition for the heavy transition metal oxide CaRuO in (001)-(LaMnO/CaRuO) superlattices is reported. Anomalous Hall effect is observed in the temperature range up to 180 K. Maximal anomalous Hall conductivity and anomalous Hall angle are as large as ∼15 Ω cm and ∼0.93%, respectively, by one to two orders of magnitude larger than those of the typical 3d ferromagnetic oxides such as LaSrMnO. Density functional theory calculations indicate the existence of avoid band crossings in the electronic band structure of the ferromagnetic CRO layer, which enhances Berry curvature thus strong anomalous Hall effects. Further evidences from polarized neutron reflectometry show that the CaRuO layers are in a fully ferromagnetic state (∼0.8 μ/Ru), in sharp contrast to the proximity-induced canted antiferromagnetic state in 5d oxides SrIrO and CaIrO (∼0.1 μ/Ir). More than that, the magnetic anisotropy of the (001)-(LaMnO/CaRuO) superlattices is eightfold symmetric, showing potential applications in the technology of multistate data storage.

eightfold magnetic anisotropy ferromagnetic states oxide superlattices proximity effect strong anomalous Hall effect

SCI

English

NI Journal Papers

Others

National Key Ramp;D Program of China["2022YFA1403302","2021YFA1400300","2020YFA0711502","2019YFA0704904","2018YFA0305704"] ; Science Center of the National Science Foundation of China[52088101] ; National Natural Science Foundation of China["11934016","92263202","12274443","12104029","51972335","62122008","61971024","12004022","12104027"] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB33030200] ; Project for Innovative Research Team of the National Natural Science Foundation of China[11921004]

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

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

WOS:001052286400001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

2-s2.0-85168614416

Scopus

1.School of Integrated Circuit Science and Engineering,Beihang University,Beijing,100191,China
2.Beijing National Laboratory for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences,Beijing,100190,China
3.Shenzhen Institute for Quantum Science and Engineering and Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
4.School of Physical Sciences,University of Chinese Academy of Sciences,Beijing,100049,China
5.Spallation Neutron Source Science Center,Dongguan,523803,China
6.Songshan Lake Materials Laboratory,Dongguan,Guangdong,523808,China
7.Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo,Zhejiang,315201,China
8.Fujian Innovation Academy,Chinese Academy of Sciences,Fuzhou,Fujian,350108,China

Zhang，Jine,Chen，Xiaobing,Wang，Mengqin,et al. Proximity-Induced Fully Ferromagnetic Order with Eightfold Magnetic Anisotropy in Heavy Transition Metal Oxide CaRuO3[J]. Advanced Functional Materials,2023,33(41).

Zhang，Jine.,Chen，Xiaobing.,Wang，Mengqin.,Zhang，Qinghua.,Shi，Wenxiao.,...&Sun，Jirong.(2023).Proximity-Induced Fully Ferromagnetic Order with Eightfold Magnetic Anisotropy in Heavy Transition Metal Oxide CaRuO3.Advanced Functional Materials,33(41).

Zhang，Jine,et al."Proximity-Induced Fully Ferromagnetic Order with Eightfold Magnetic Anisotropy in Heavy Transition Metal Oxide CaRuO3".Advanced Functional Materials 33.41(2023).