Symmetry-Mismatch-Induced Ferromagnetism in the Interfacial Layers of CaRuO3/SrTiO3 Superlattices

Shi, Wenxiao1,2,3; Zhang, Jine4; Chen, Xiaobing1,2,5,6; Zhang, Qinghua1,2,3; Zhan, Xiaozhi2,7; Li, Zhe1,2,3; Zheng, Jie1,2,3; Wang, Mengqin1,2,3; Han, Furong4; Zhang, Hui4; Gu, Lin1,2,3; Zhu, Tao1,2,7; Liu, Banggui1,2,3; Chen, Yunzhong1,2,3; Hu, Fengxia1,2,3; Shen, Baogen1,2,3,8; Chen, Yuansha1,2,3,9; Sun, Jirong1,2,3,10,11

2023-04-01

10.1002/adfm.202300338

ADVANCED FUNCTIONAL MATERIALS   Impact Factor & Quartile

1616-301X

1616-3028

By modifying the entangled multi-degrees of freedom of transition-metal oxides, interlayer coupling usually produces interfacial phases with unusual functionalities. Herein, a symmetry-mismatch-driven interfacial phase transition from paramagnetic to ferromagnetic state is reported. By constructing superlattices using CaRuO3 and SrTiO3, two oxides with different oxygen octahedron networks, the tilting/rotation of oxygen octahedra near interface is tuned dramatically, causing an angle increase from approximate to 150 degrees to approximate to 165 degrees for the Ru-O-Ru bond. This in turn drives the interfacial layer of CaRuO3, approximate to 3 unit cells in thickness, from paramagnetic into ferromagnetic state. The ferromagnetic order is robust, showing the highest Curie temperature of approximate to 120 K and the largest saturation magnetization of approximate to 0.7 mu(B) per formula unit. Density functional theory calculations show that the reduced tilting/rotation of RuO6 octahedra favors an itinerant ferromagnetic ground state. This work demonstrates an effective phase tuning by coupled octahedral rotations, offering a new approach to explore emergent materials with desired functionalities.

CaRuO3 itinerant ferromagnetism oxygen octahedra tilting superlattices

SCI

English

NI Journal Papers

Others

Science Center of the National Science Foundation of China[52088101] ; National Basic Research of China["2022YFA1403302","2018YFA0305704","2019YFA0704904"] ; Project for Innovative Research Team of National Natural Science Foundation of China[11921004] ; National Natural Science Foundation of China["11934016","51972335","12274443","12004022"] ; Chinese Academy of Sciences[XDB33030200]

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

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

WOS:000963768100001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

Web of Science

1.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
4.Beihang Univ, Sch Integrated Circuit Sci & Engn, Beijing 100191, Peoples R China
5.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn SIQSE, Shenzhen 518055, Peoples R China
6.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
7.Spallat Neutron Source Sci Ctr, Dongguan 523803, Guangdong, Peoples R China
8.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
9.Chinese Acad Sci, Fujian Innovat Acad, Fuzhou 350108, Fujian, Peoples R China
10.Univ Jinan, Spintron Inst, Jinan 250022, Shandong, Peoples R China
11.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China

Shi, Wenxiao,Zhang, Jine,Chen, Xiaobing,et al. Symmetry-Mismatch-Induced Ferromagnetism in the Interfacial Layers of CaRuO3/SrTiO3 Superlattices[J]. ADVANCED FUNCTIONAL MATERIALS,2023.

Shi, Wenxiao.,Zhang, Jine.,Chen, Xiaobing.,Zhang, Qinghua.,Zhan, Xiaozhi.,...&Sun, Jirong.(2023).Symmetry-Mismatch-Induced Ferromagnetism in the Interfacial Layers of CaRuO3/SrTiO3 Superlattices.ADVANCED FUNCTIONAL MATERIALS.

Shi, Wenxiao,et al."Symmetry-Mismatch-Induced Ferromagnetism in the Interfacial Layers of CaRuO3/SrTiO3 Superlattices".ADVANCED FUNCTIONAL MATERIALS (2023).