Nonlinear current-voltage characteristics due to quantum tunneling of phase slips in superconducting Nb nanowire networks
classification
❄️ cond-mat.supr-con
keywords
characteristicsnonlinearphasequantumslipstunnelinganalyzedarray
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We report on the transport properties of an array of N about 30 interconnected Nb nanowires, grown by sputtering on robust porous Si substrates. The analyzed system exhibits a broad resistive transition in zero magnetic field, H, and highly nonlinear V(I) characteristics as a function of H which can be both consistently described by quantum tunneling of phase slips.
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