当前位置: X-MOL 学术Nat. Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Ferroelectrically tunable magnetic skyrmions in ultrathin oxide heterostructures
Nature Materials ( IF 41.2 ) Pub Date : 2018-11-05 , DOI: 10.1038/s41563-018-0204-4
Lingfei Wang , Qiyuan Feng , Yoonkoo Kim , Rokyeon Kim , Ki Hoon Lee , Shawn D. Pollard , Yeong Jae Shin , Haibiao Zhou , Wei Peng , Daesu Lee , Wenjie Meng , Hyunsoo Yang , Jung Hoon Han , Miyoung Kim , Qingyou Lu , Tae Won Noh

Magnetic skyrmions are topologically protected whirling spin texture. Their nanoscale dimensions, topologically protected stability and solitonic nature, together are promising for future spintronics applications. To translate these compelling features into practical spintronic devices, a key challenge lies in achieving effective control of skyrmion properties, such as size, density and thermodynamic stability. Here, we report the discovery of ferroelectrically tunable skyrmions in ultrathin BaTiO3/SrRuO3 bilayer heterostructures. The ferroelectric proximity effect at the BaTiO3/SrRuO3 heterointerface triggers a sizeable Dzyaloshinskii–Moriya interaction, thus stabilizing robust skyrmions with diameters less than a hundred nanometres. Moreover, by manipulating the ferroelectric polarization of the BaTiO3 layer, we achieve local, switchable and nonvolatile control of both skyrmion density and thermodynamic stability. This ferroelectrically tunable skyrmion system can simultaneously enhance the integratability and addressability of skyrmion-based functional devices.



中文翻译:

超薄氧化物异质结构中的铁电可调谐磁性天体

磁性天rm是在拓扑上受保护的旋转自旋纹理。它们的纳米级尺寸,受拓扑保护的稳定性和孤子性质,共同为将来的自旋电子学应用带来了希望。为了将这些引人注目的特征转化为实用的自旋电子器件,关键挑战在于如何有效控制天体离子的性质,例如尺寸,密度和热力学稳定性。在这里,我们报告了在超薄BaTiO 3 / SrRuO 3双层异质结构中发现铁电可调的天空离子。BaTiO 3 / SrRuO 3处的铁电邻近效应异质界面会引发大量的Dzyaloshinskii-Moriya相互作用,从而稳定了直径小于100纳米的坚固的天空碎片。此外,通过控制BaTiO 3层的铁电极化,我们实现了对天空粒子密度和热力学稳定性的局部,可切换和非易失性控制。这种铁电可调式天窗离子系统可以同时增强基于天窗离子的功能设备的可集成性和寻址能力。

更新日期:2018-12-10
down
wechat
bug