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Prediction of three-terminal 2D magnetoelectric heterostructure

ORAL

Abstract

Materials possessing both ferromagnetic (FM) and ferroelectric (FE) orderings enable the control of magnetism by electric fields and the reverse, showing broad applications in various functional devices. The key for the cross control of FM and FE orderings is strong magnetoelectric coupling. Here, by using density-functional-theory calculations, we show that magnetoelectric coupling is enhanced significantly in heterostructures that combine polar FM MnSeTe and FE In2Se3 monolayers. The polarity of the MnSeTe enhances the Dzyaloshinskii-Moriya interaction (DMI) and the magnetoelectric coupling with the In2Se3 monolayer. A bilayer MnSeTe/In2Se3 heterostructure exhibits magnetic skyrmions that can be modulated by reversing the polarization of In2Se3 by an applied electric field. We further design a trilayer In2Se3/MnSeTe/In2Se3 heterostructure, in which multiple FE polarization states enable control of the evolution of magnetic skyrmions in MnSeTe in a three-terminal device configuration. The present findings provide a method to achieve strong magnetoelectric coupling in the 2D limit and a new perspective for the design of related spintronics.

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Presenters

  • Xin Jin

    Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China.

Authors

  • Xin Jin

    Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China.

  • Andrew O Hara

    Department of Physics and Astronomy and Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN 37235, USA

  • Yu-Yang Zhang

    Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China.

  • Shixuan Du

    Institute of Physics, Chinese Academy of Sciences., Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China.

  • Sokrates T Pantelides

    Vanderbilt Univ, Department of Physics and Astronomy and Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN 37235, USA, Department of Physics, Vanderbilt University, Department of Physics and Astronomy and Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN