Abstract
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.
Original language | English (US) |
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Article number | 103906 |
Journal | Review of Scientific Instruments |
Volume | 79 |
Issue number | 10 |
DOIs | |
State | Published - 2008 |
ASJC Scopus subject areas
- Instrumentation