标题： 带有邻近约瑟夫森结的探针式SQUID显微镜 显示英文标题

标题： Tapping-mode SQUID-on-tip Microscopy with Proximity Josephson Junctions

摘要： 研究纳米尺度动力学对于理解量子材料和推动量子芯片制造至关重要。 然而，测量非平衡性质如电流和耗散及其与结构的关系仍然是一个重大挑战。 利用超导量子干涉装置（SQUIDs）的扫描纳米探针在此方面独具优势，因为它们具有无与伦比的磁性和热灵敏度。 在此，我们介绍了敲击模式的SQUID-on-tip，它将原子力显微镜（AFM）与纳米SQUID传感相结合。 我们的探针最小化了纳米SQUID与样品之间的距离，提供了平面内磁灵敏度，并且无需激光操作。 频率复用技术使得能够同时成像电流、磁性、耗散和形貌。 我们接近结纳米SQUID的大电压输出使我们能够使用简单的四探针电子读出系统，在不需要低温放大器的情况下分辨小至100 nA的纳米尺度电流。 通过在不使用外部辐射的情况下捕捉局部磁性、热性和电子响应，我们的技术为研究奇异材料和精细量子电路中的动态现象提供了一种强大的非侵入性方法。 显示英文摘要

摘要： Studying nanoscale dynamics is essential for understanding quantum materials and advancing quantum chip manufacturing. Still, it remains a major challenge to measure non-equilibrium properties such as current and dissipation, and their relation to structure. Scanning nanoprobes utilizing superconducting quantum interference devices (SQUIDs) are uniquely suited here, due to their unparalleled magnetic and thermal sensitivity. Here, we introduce tapping-mode SQUID-on-tip, which combines atomic force microscopy (AFM) with nanoSQUID sensing. Our probes minimize nanoSQUID-sample distance, provide in-plane magnetic sensitivity, and operate without lasers. Frequency multiplexing enables simultaneous imaging of currents, magnetism, dissipation and topography. The large voltage output of our proximity-junction nanoSQUIDs allows us to resolve nanoscale currents as small as 100 nA using a simple four-probe electronic readout without cryogenic amplification. By capturing local magnetic, thermal, and electronic response without external radiation, our technique offers a powerful non-invasive route to study dynamic phenomena in exotic materials and delicate quantum circuits.