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Title: Atomic-Scale Control of Magnetism at the Titanite-Manganite Interfaces

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. In this work, using prototype La 2/3Sr 1/3MnO 3/BaTiO 3 heterostructures, we show that ferroelectric polarization of BaTiO 3 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. Notably, 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.

Authors:
 [1];  [1];  [2];  [1];  [3];  [1]; ORCiD logo [1];  [4]; ORCiD logo [4];  [1];  [5];  [1];  [6];  [1]; ORCiD logo [1];  [3];  [2]; ORCiD logo [1]
  1. National Univ. of Singapore (Singapore)
  2. Zhejiang Univ., Hangzhou (China)
  3. Univ. of Nebraska, Lincoln, NE (United States)
  4. Nanyang Technological Univ. (Singapore)
  5. Argonne National Lab. (ANL), Argonne, IL (United States)
  6. Hebei Univ., Baoding (China)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE; Singapore National Science Foundation; National Natural Science Foundation of China (NNSFC); National Key Research and Development Program of China
OSTI Identifier:
1561110
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 19; Journal Issue: 5; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; artificial multiferroic interface; charge transfer; ferroelectric field effect; interfacial magnetic coupling; orbital anisotropy; orbital hybridization

Citation Formats

Wang, Han, Chi, Xiao, Liu, ZhongRan, Yoong, HerngYau, Tao, LingLing, Xiao, JuanXiu, Guo, Rui, Wang, JingXian, Dong, ZhiLi, Yang, Ping, Sun, Cheng-Jun, Li, ChangJian, Yan, XiaoBing, Wang, John, Chow, Gan Moog, Tsymbal, Evgeny Y., Tian, He, and Chen, Jingsheng. Atomic-Scale Control of Magnetism at the Titanite-Manganite Interfaces. United States: N. p., 2019. Web. doi:10.1021/acs.nanolett.9b00441.
Wang, Han, Chi, Xiao, Liu, ZhongRan, Yoong, HerngYau, Tao, LingLing, Xiao, JuanXiu, Guo, Rui, Wang, JingXian, Dong, ZhiLi, Yang, Ping, Sun, Cheng-Jun, Li, ChangJian, Yan, XiaoBing, Wang, John, Chow, Gan Moog, Tsymbal, Evgeny Y., Tian, He, & Chen, Jingsheng. Atomic-Scale Control of Magnetism at the Titanite-Manganite Interfaces. United States. doi:10.1021/acs.nanolett.9b00441.
Wang, Han, Chi, Xiao, Liu, ZhongRan, Yoong, HerngYau, Tao, LingLing, Xiao, JuanXiu, Guo, Rui, Wang, JingXian, Dong, ZhiLi, Yang, Ping, Sun, Cheng-Jun, Li, ChangJian, Yan, XiaoBing, Wang, John, Chow, Gan Moog, Tsymbal, Evgeny Y., Tian, He, and Chen, Jingsheng. Tue . "Atomic-Scale Control of Magnetism at the Titanite-Manganite Interfaces". United States. doi:10.1021/acs.nanolett.9b00441. https://www.osti.gov/servlets/purl/1561110.
@article{osti_1561110,
title = {Atomic-Scale Control of Magnetism at the Titanite-Manganite Interfaces},
author = {Wang, Han and Chi, Xiao and Liu, ZhongRan and Yoong, HerngYau and Tao, LingLing and Xiao, JuanXiu and Guo, Rui and Wang, JingXian and Dong, ZhiLi and Yang, Ping and Sun, Cheng-Jun and Li, ChangJian and Yan, XiaoBing and Wang, John and Chow, Gan Moog and Tsymbal, Evgeny Y. and Tian, He and Chen, Jingsheng},
abstractNote = {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. In this work, using prototype La2/3Sr1/3MnO3/BaTiO3 heterostructures, we show 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. Notably, 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.},
doi = {10.1021/acs.nanolett.9b00441},
journal = {Nano Letters},
issn = {1530-6984},
number = 5,
volume = 19,
place = {United States},
year = {2019},
month = {4}
}

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