论文标题
带有径向基函数重建算法的单旋扫描磁显微镜
Single-spin scanning magnetic microscopy with radial basis function reconstruction algorithm
论文作者
论文摘要
外来磁性结构（例如磁性天空和域壁）在氮胶合中心扫描磁力测定法中变得越来越重要。然而，尚未可用的几个毫米绘制的杂散场的系统成像方法，尚不可用。在这里，我们提出了一种通过跟踪磁共振频率来对Millitesla磁场进行成像的方案，该磁共振频率可以记录磁场的多个轮廓线。径向基函数算法用于从轮廓线重建磁场。用射击噪声定量地证实了重建算法的高质量的模拟。该方法通过对沮丧的磁铁的杂散场进行成像来验证。我们的方案的最大可检测磁场梯度为每个像素0.86吨，这可以有效地对Millitesla磁场进行成像。
Exotic magnetic structures, such as magnetic skyrmions and domain walls, are becoming more important in nitrogen-vacancy center scanning magnetometry. However, a systematic imaging approach to mapping stray fields with fluctuation of several milliteslas generated by such structures is not yet available. Here we present a scheme to image a millitesla magnetic field by tracking the magnetic resonance frequency, which can record multiple contour lines for a magnetic field. The radial basis function algorithm is employed to reconstruct the magnetic field from the contour lines. Simulations with shot noise quantitatively confirm the high quality of the reconstruction algorithm. The method was validated by imaging the stray field of a frustrated magnet. Our scheme had a maximum detectable magnetic field gradient of 0.86 mT per pixel, which enables the efficient imaging of millitesla magnetic fields.
