Picovoltmeter for probing vortex dynamics in a single weak-pinning Corbino channel.
نویسندگان
چکیده
We have developed a picovoltmeter using a Nb dc superconducting quantum interference device for measuring the flux-flow voltage from a small number of vortices moving through a submicron weak-pinning superconducting channel. We have applied this picovoltmeter to measure the vortex response in a single channel arranged in a circle on a Corbino disk geometry. The circular channel allows the vortices to follow closed orbits without encountering any sample edges, thus eliminating the influence of entry barriers.
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ورودعنوان ژورنال:
- The Review of scientific instruments
دوره 79 10 شماره
صفحات -
تاریخ انتشار 2008