Scanning microSQUID Force Microscope


A novel scanning probe technique is presented: Scanning microSQUID Force microscopy (SSFM). The instrument features independent topographic and magnetic imaging. The SSFM operates in a dilution refrigerator in cryogenic vacuum. Sample and probe can be cooled to 0.45 K. The probe consists of a microSQUID placed at the edge of a silicon chip attached to a quartz tuning fork. A topographic vertical resolution of 0.02 micrometer is demonstrated and magnetic flux as weak as 10−3Φ010^{-3} \Phi_{0} is resolved with a 1 micrometer diameter microSQUID loop.Comment: submitted to Review of Scientific Instrument

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