Abstract

Based on Hall probes, a scanning microscope with a survey area of 5 × 5 mm has been developed and used for high-spatial-resolution and sensitivity measurements of the topology of magnetic field B(X, Y, Z) on the surface of and around the YBa₂Cu₃O_{7 – x} and Bi₂Sr₂CaCu₂O_{8 + x} samples without resorting to electrodynamics expressions. The differential technique with the fixation of the beginning and end of the probe displacement ensures the scanning accuracy of about 10 and 1 μm for scanning along the X, Y, and Z axes, respectively. The maximal displacement along the Z axis is 25 mm. For eliminating measuring errors, normalized distributions B(Z)/B^max(0) are extrapolated to the ordinate axis shifted along the Z axis by the width of the gap between the sample surface and the Hall probe.

中文翻译：

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超导体的空间特性及其3D霍尔显微镜的分析

摘要

基于霍尔探头，已经开发出了一种具有5×5 mm的测量区域的扫描显微镜，并用于对空间表面和磁场B（X，Y，Z）的拓扑进行高空间分辨率和灵敏度测量。在YBa ₂ Cu ₃ O _{7 – x}和Bi ₂ Sr ₂ CaCu ₂ O _{8 + x}样品周围进行测量，而无需借助电动力学表达式。与探针的位移的开始和结束的固定的差分技术可确保约10和11微米的扫描精度为沿着扫描X，Y轴和Z轴。沿Z轴的最大位移为25 mm。为了消除测量误差，将归一化分布B（Z）/ B ^max（0）外推到沿Z轴移动了样品表面与霍尔探针之间的间隙宽度的纵坐标轴。