Local imaging of diamagnetism in proximity-coupled niobium nanoisland arrays on gold thin films

Horn, Logan Bishop-Van; Zhang, Irene P.; Waite, Emily N.; Mondragon-Shem, Ian; Jensen, Scott; Oh, Jun-Seok; Lippman, Tom; Durkin, Malcolm; Hughes, Taylor L.; Mason, Nadya; Moler, Kathryn A.; Sochnikov, Ilya

doi:10.1103/physrevb.106.054521

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2023

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Cited by 2 publications

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“…Several cryogenic scanning probe microscopes have been already realized in closed cycle cryostats. They include scanning gate microscopy [8,9], scanning tunneling microscopy [10], and scanning SQUID microscopy [11][12][13][14][15][16][17][18][19]. In most of these systems, a rigid scanner or decoupling of vibrations through flexible thermal links or a combination of the two mitigation methods were implemented.…”

Section: Introductionmentioning

confidence: 99%

Versatile Millikelvin Hybrid Cooling Platform for Superconductivity Research

Franklin

Bedard

Sochnikov

2023

IEEE Trans. Appl. Supercond.

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Closed cycle He 3 -He 4 dilution cryostats became the platform of choice in quantum sciences in the era of helium shortage. However, in many experiments, the mechanical vibrations induced by the pulsed cryocoolers present a significant drawback reflected both in electronic and mechanical noises. Here, we present a hybrid dilution cryostat platform; we have automated a commercial closed-cycle system to operate on a cryocooler or on a liquid helium 'battery'. We implemented a scanning SQUID microscope in the hybrid dilution refrigerator. In this work we show the design of the hybrid setup and how its operation eliminates vibration artefacts in magnetic imaging.

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