MicroSQUID Force Microscopy in a Dilution Refrigerator
作者: D. J. HykelZ. S. WangP. CastellazziT. CrozesG. ShawK. SchusterK. Hasselbach
作者单位: 1CNRS, Institut Néel, Université Grenoble Alpes
2Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Science
3Institut de Radioastronomie Millimétrique, Domaine Universitaire
刊名: Journal of Low Temperature Physics, 2014, Vol.175 (5-6), pp.861-867
来源数据库: Springer Journal
DOI: 10.1007/s10909-014-1174-9
关键词: SQUIDScanning microscopySuperconductivty
英文摘要: Abstract(#br)We present a new generation of a scanning microSQUID microscope operating in an inverted dilution refrigerator. The microSQUIDs have a size of 1.21 $$ \ \upmu $$ μ m $$^{2}$$ 2 and a magnetic flux sensitivity of 120 $$\upmu \Phi _{0} / \sqrt{\text {Hz}}$$ μ Φ 0 / Hz and thus a field sensitivity of 550 $$ \ \upmu \text {G}/ \sqrt{\text {Hz}}$$ μ G / Hz . The scan range at low temperatures is about 80 $$\upmu $$ μ m and a coarse displacement of 5 mm in x and y direction has been implemented. The microSQUID-to-sample distance is regulated using a tuning fork based force detection. A microSQUID-to-sample distance of 420 nm has been obtained. The reliable knowledge of this distance is necessary to obtain a trustworthy estimate of the...
全文获取路径: Springer  (合作)
影响因子:1.183 (2012)

  • Force