We present a scanning force microscope that operates in a dilution refrigerator at temperatures of about 100 mK. We use tuning fork sensors for scanning gate experiments on mesoscopic semiconductor nanostructures. Slip-stick motors allow sample coarse-positioning at base temperature. The construction, thermal anchoring, and a procedure to optimize the settings of the phase-locked loop that we use for sensor control are discussed in detail. We present low-temperature topographic and scanning gate images as examples of successful operation.
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Research Article| January 31 2007
Construction of a dilution refrigerator cooled scanning force microscope
A. E. Gildemeister;
A. E. Gildemeister, T. Ihn, C. Barengo, P. Studerus, K. Ensslin; Construction of a dilution refrigerator cooled scanning force microscope. Rev. Sci. Instrum. 1 January 2007; 78 (1): 013704. https://doi.org/10.1063/1.2431793
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