Tapping-Mode SQUID-on-Tip Microscopy with Proximity Josephson Junctions.

ABSTRACT: Studying nanoscale dynamics is essential for understanding quantum materials and advancing quantum-chip manufacturing. Still, it remains a major challenge to measure nonequilibrium properties such as current and dissipation, and their relationship 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 with nanoSQUID sensing. Our probes minimize the nanoSQUID-sample distance, provide in-plane magnetic sensitivity, and operate on realistic, highly corrugated nanostructures. Frequency multiplexing enables simultaneous imaging of currents, magnetism, dissipation, and topography. The l

SUBMITTER: Rog M 

PROVIDER: S-EPMC12904092 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature