论文标题
大面积磁场中的扫描氮 - 视口中心磁力测定法
Scanning nitrogen-vacancy center magnetometry in large in-plane magnetic fields
论文作者
论文摘要
用钻石中的氮气胶囊（NV）中心扫描磁力测定法已成为一种强大的显微镜，用于研究纳米分辨率的弱静球场模式。但是，由于自旋缺陷的内部晶体各向异性，必须沿特定的空间方向应用外部偏置场（对于研究磁性材料的研究至关重要）。特别是，由{100}制成的最常见的钻石探针仅以$θ= 55^\ circ $的角度支撑钻石。在本文中，我们报告了{110} - 切割钻石的扫描钻石探针的制造，其中旋转各向异性轴位于扫描平面（$θ= 90^\ circ $）。我们表明，这些探针将其灵敏度保留在大面积场中，并在高达40 mt的应用场中证明了胶片膜的域模式的扫描磁力法。我们的工作将扫描NV磁力测定法扩展到需要大型面板的重要材料类别。
Scanning magnetometry with nitrogen-vacancy (NV) centers in diamond has emerged as a powerful microscopy for studying weak stray field patterns with nanometer resolution. Due to the internal crystal anisotropy of the spin defect, however, external bias fields -- critical for the study of magnetic materials -- must be applied along specific spatial directions. In particular, the most common diamond probes made from {100}-cut diamond only support fields at an angle of $θ= 55^\circ$ from the surface normal. In this paper, we report fabrication of scanning diamond probes from {110}-cut diamond where the spin anisotropy axis lies in the scan plane ($θ=90^\circ$). We show that these probes retain their sensitivity in large in-plane fields and demonstrate scanning magnetometry of the domain pattern of Co-NiO films in applied fields up to 40 mT. Our work extends scanning NV magnetometry to the important class of materials that require large in-plane fields.
