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首页> 外文期刊>Advanced Materials >Electric-Field Control of Propagating Spin Waves by Ferroelectric Domain-Wall Motion in a Multiferroic Heterostructure
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Electric-Field Control of Propagating Spin Waves by Ferroelectric Domain-Wall Motion in a Multiferroic Heterostructure

机译：在多体异质结构中铁电畴壁运动传播旋转波的电场控制

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Magnetoelectric coupling in multiferroic heterostructures offers a promising platform for electric-field control of magnonic devices based on low-power spin-wave transport. Here, electric-field manipulation of the amplitude and phase of propagating spin waves in a ferromagnetic Fe film on top of a ferroelectric BaTiO3 substrate is demonstrated experimentally. Electric-field effects in this composite material system are mediated by strain coupling between alternating ferroelectric stripe domains with in-plane and perpendicular polarization and fully correlated magnetic anisotropy domains with differing spin-wave transport properties. The propagation of spin waves across the strain-induced magnetic anisotropy domains of the Fe film is directly imaged and it is shown how reversible electric-field-driven motion of ferroelectric domain walls and pinned anisotropy boundaries turns the spin-wave signal on and off. Furthermore, linear electric-field tuning of the spin-wave phase by altering the width of strain-coupled stripe domains is demonstrated. The results provide a new route toward energy-efficient reconfigurable magnonics.
机译：多体异质结构中的磁电耦合为基于低功率自旋波传输的磁力装置的电场控制提供了有希望的平台。这里，实验证明了在铁电BATIO3基板顶部的铁磁性Fe膜中传播旋转波的幅度和相位的电场操纵。该复合材料系统中的电场效果是通过与平面内和垂直偏振的交替的铁电条形结构域之间的应变耦合介导，并且具有不同的旋转波传输性能的完全相关的磁各向异性畴。旋转波在Fe膜的应变诱导的磁各向异性域的传播直接成像，示出了铁电畴壁的可逆电场驱动运动和固定的各向异性边界的旋转运动方式转动旋转波信号。此外，证明了通过改变应变耦合条纹域的宽度来实现旋转波相的线性电场调谐。结果为节能可重新配置千万度提供了新的路线。

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