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Title: Atomic-scale control of magnetism at the titanite-manganite interfaces
Authors: Wang, Han
Chi, Xiao
Liu, Zhong Ran
Yoong, Herng Yau
Tao, Ling Ling
Xiao, Juan Xiu
Guo, Rui
Wang, Jing Xian
Dong, Zhi Li
Yang, Ping
Sun, Cheng-Jun
Li, Chang Jian
Yan, Xiao Bing
Wang, John
Chow, Gan Moog
Tsymbal, Evgeny Y.
Tian, He
Chen, Jingsheng
Keywords: Engineering::Materials
Issue Date: 2019
Source: Wang, H., Chi, X., Liu, Z. R., Yoong, H. Y., Tao, L. L., Xiao, J. X., . . .Chen, J. (2019). Atomic-Scale Control of Magnetism at the Titanite-Manganite Interfaces. Nano Letters, 19(5), 3057–3065. doi:10.1021/acs.nanolett.9b00441
Journal: Nano letters
Abstract: Complex oxide thin-film heterostructures often exhibit magnetic properties different from those known for bulk constituents. This is due to the altered local structural and electronic environment at the interfaces, which affects the exchange coupling and magnetic ordering. The emergent magnetism at oxide interfaces can be controlled by ferroelectric polarization and has a strong effect on spin-dependent transport properties of oxide heterostructures, including magnetic and ferroelectric tunnel junctions. Here, using prototype La2/3Sr1/3MnO3/BaTiO3 heterostructures, we demonstrate that ferroelectric polarization of BaTiO3 controls the orbital hybridization and magnetism at heterointerfaces. We observe changes in the enhanced orbital occupancy and significant charge redistribution across the heterointerfaces, affecting the spin and orbital magnetic moments of the interfacial Mn and Ti atoms. Importantly, we find that the exchange coupling between Mn and Ti atoms across the interface is tuned by ferroelectric polarization from ferromagnetic to antiferromagnetic. Our findings provide a viable route to electrically control complex magnetic configurations at artificial multiferroic interfaces, taking a step toward low-power spintronics.
ISSN: 1530-6984
DOI: 10.1021/acs.nanolett.9b00441
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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