利用偶极耦合结构中的磁畴壁进行自旋波相位调制以实现非易失性磁子计算
Spin-wave phase modulation using magnetic domain walls in dipolarly coupled structures for non-volatile magnonic computation
AI总结：
提出一种基于磁畴壁位置控制的自旋波移相器，通过两个紧密波导间的偶极耦合实现近360°连续相位调谐，并保持自旋波幅度不变，为紧凑、可重构的非易失性磁子逻辑架构提供关键组件。
摘要：
可控移相器是基于自旋波的逻辑和信息处理设备的关键组件。本文提出了一种基于磁畴壁位置控制的自旋波移相器，利用两个紧密波导之间的偶极耦合，在保持自旋波幅度恒定的同时，实现接近360°范围的连续相位调谐。通过微磁模拟，我们建立了一个无偏置混合结构，该结构由纳米级波导和半环形结构组成，两者均由具有强垂直磁各向异性的掺铋钇铁石榴石制成，并通过静磁耦合连接。半环中磁畴壁的移动会改变相邻直波导中的色散关系，从而提供紧凑且动态可重构的移相机制。该方法实现了对自旋波传播的精确、非易失性控制，并与节能型磁子逻辑架构兼容。
英文摘要：
A controllable phase shifter is a key component for spin-wave-based logic and information processing devices. Here, we propose a domain-wall-position-controlled spin-wave phase shifter that exploits dipolar coupling between two closely spaced waveguides to enable continuous phase tuning over a range approaching 360degrees while keeping the spin-wave amplitude constant. Using micromagnetic simulations, we model a bias-free hybrid structure composed of a nanoscale waveguide magnetostatically coupled to a half-ring-shaped structure both made from bismuth-doped yttrium iron garnet with strong perpendicular magnetic anisotropy. Displacing a domain wall in the half-ring modulates the dispersion relation in the adjacent straight waveguide due to the changed magnetostatic interaction, providing a compact and dynamically reconfigurable phase-shifting mechanism. This approach offers precise and non-volatile control over spin-wave propagation and is compatible with energy-efficient magnonic logic architectures.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
