In this letter, we report the use of optically addressable spin centers in SiC to probe the static magnetic stray fields generated by a ferromagnetic microstructure lithographically patterned on the surface of a SiC crystal. The stray fields cause shifts in the resonance frequency of the spin centers. The spin resonance in the spin centers is driven by a micrometer-sized microwave antenna patterned adjacent to the magnetic element. The patterning of the antenna is done to ensure that the driving microwave fields are delivered locally and more efficiently compared to conventional, millimeter-sized circuits. A clear difference in the resonance frequency of the spin centers in SiC is observed at various distances to the magnetic element, for two different magnetic states. Our results are a first step toward developing magnon-quantum applications by deploying the local microwave fields and the stray fields at the micrometer length scale.

中文翻译：

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使用SiC中的自旋中心绘制微磁体的杂散场

在这封信中，我们报告了在SiC中使用可光学寻址的自旋中心来探测由在SiC晶体表面上光刻构图的铁磁微结构所产生的静态杂散磁场。杂散场导致自旋中心的共振频率发生偏移。自旋中心的自旋共振由与磁性元件相邻构图的微米级微波天线驱动。进行天线的构图是为了确保与传统的毫米级电路相比，可以局部且更有效地传递驱动微波场。对于两种不同的磁性状态，在距磁性元件不同距离处观察到SiC中自旋中心共振频率的明显差异。