论文标题
通过微磁异质结构设备映射固有的光电流流线
Mapping the intrinsic photocurrent streamlines through micromagnetic heterostructure devices
论文作者
论文摘要
就像流过机翼的空气一样，优化电子电荷流对于纳米级设备的运行至关重要。不幸的是，复杂设备中电荷，自旋和热量的微妙相互作用排除了电荷流的详细成像。在这里，我们报告了固有电荷电流通过YTTrium铁石榴石微磁性异质结构的可视化。精确设计的设备的扫描光电压显微镜会导致惊人的空间模式，并具有突出的光伏特征，拐角处出现和狭窄的收缩。这些模式随着外部磁场的旋转而连续发展，可以使流体状流量丰富的空间映射。从空气动力的Clark y翼型中汲取灵感，我们设计了微型机翼形状的设备，称为电压，这使我们能够精确扭曲，压缩和解压缩电子电荷流量。120（39）E2221815120
Like air flowing over a wing, optimizing the flow of electronic charge is essential to the operation of nanoscale devices. Unfortunately, the delicate interplay of charge, spin, and heat in complex devices has precluded detailed imaging of charge flow. Here, we report on the visualization of intrinsic charge current streamlines through yttrium iron garnet micromagnetic heterostructures. Scanning photovoltage microscopy of precisely designed devices leads to striking spatial patterns, with prominent photovoltage features emerging in corners and narrow constrictions. These patterns, which evolve continuously with rotation of an external magnetic field, enable rich spatial mapping of fluid-like flow. Taking inspiration from aerodynamic Clark Y airfoils, we engineer micromagnetic wing shaped devices, called electrofoils, which allow us to precisely contort, compress and decompress flowlines of electronic charge.120 (39) e2221815120
