自旋电子学
空中骑兵
凝聚态物理
异质结
极化(电化学)
电场
铁电性
多铁性
磁电效应
材料科学
极化密度
联轴节(管道)
磁场
物理
铁磁性
光电子学
磁化
电介质
量子力学
化学
物理化学
冶金
作者
Xin Jin,Andrew O’Hara,Yu-Yang Zhang,Shixuan Du,Sokrates T. Pantelides
出处
期刊:2D materials
[IOP Publishing]
日期:2022-11-03
卷期号:10 (1): 015007-015007
被引量:5
标识
DOI:10.1088/2053-1583/ac9b6e
摘要
Abstract The quest for electric-field control of nanoscale magnetic states such as skyrmions, which would impact the field of spintronics, has led to a challenging search for multiferroic materials or structures with strong magnetoelectric coupling and efficient electric-field control. Here we report a theoretical prediction that such phenomena can be realized in two-dimensional (2D) bilayer FE/PMM and trilayer FE/PMM/FE heterostructures (two-terminal and three-terminal devices), where FE is a 2D ferroelectric and PMM is a polar magnetic metal with strong spin–orbit coupling. Such a PMM has strong Dzyaloshinskii-Moriya interactions (DMI) that can generate skyrmions, while the FE can generate strong magnetoelectric coupling through polarization-polarization interactions. In trilayer heterostructures, contact to the metallic PMM layer enables multiple polarization configurations for electric-field control of skyrmions. We report density-functional-theory calculations for particular material choices that demonstrate the effectiveness of these arrangements, with the key driver being the polarization-polarization interactions between the PMM and FE layers. 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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