Abstract
We observe oscillations in the resistivity as a function of the magnetic field at 80K in a 5-μm-wide channel with a 100-nm-diameter hole fabricated in a multi-band superconducting (Tlx, Cu1−x)(Bay, Sr1−y)2Ca2Cu3Oz film. A phase shift is observed in the oscillations at magnetic fields around 200mT, which is similar to previous observations in mesoscopic superconducting rings with two order parameters.
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