• Letter

Magnetoelectric coupling dependent on ferroelectric switching paths in two-dimensional perovskite multiferroics

Xiaofan Shen, Qunyong Luo, Zongshuo Wu, Ying Zhou, Jianli Wang, Junting Zhang, Jie Su, and Xiaomei Lu
Phys. Rev. B 103, L220406 – Published 14 June 2021
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Abstract

Two-dimensional (2D) multiferroics have attracted considerable interest since the recent discovery of 2D ferroelectricity and ferromagnetism in van der Waals materials. Here we show the universality of 2D multiferroics in the Ca-based double-perovskite bilayer system and the transition of magnetization that is dependent on the ferroelectric switching paths by combining symmetry analysis and first-principles calculation. We demonstrate that although both the switching of rotation and tilt distortion can lead to polarization reversal, only the latter can cause a change in the direction of magnetization. The breaking of the inversion symmetry correlation between the initial and final polarization states is the key to achieve the transition of magnetization caused by polarization reversal. The ferroelectric switching that reverses tilt distortion via multistep switching generally has the lowest energy barrier, providing the feasibility of controlling magnetization by an electric field.

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  • Received 29 November 2020
  • Revised 4 April 2021
  • Accepted 1 June 2021

DOI:https://doi.org/10.1103/PhysRevB.103.L220406

©2021 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Xiaofan Shen1, Qunyong Luo1, Zongshuo Wu1, Ying Zhou1, Jianli Wang1, Junting Zhang1,*, Jie Su2,†, and Xiaomei Lu3

  • 1School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
  • 2School of Electronic and Information Engineering, Qingdao University, Qingdao 266071, China
  • 3National Laboratory of Solid State Microstructures and Physics School, Nanjing University, Nanjing 210093, China

  • *juntingzhang@cumt.edu.cn
  • jsu@qdu.edu.cn

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Issue

Vol. 103, Iss. 22 — 1 June 2021

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