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Two-dimensional regime in the angular dependence of the upper critical field of superconducting/normal metal hybrid
1D superconductivity in porous Nb ultrathin films
We report on the measurements of the transport properties of superconducting Nb ultrathin bridges
grown by UHV magnetron sputtering on porous Si substrates. The films are about 10 nm thick and inherit
from the substrate a structure made of holes with diameter of 10 nm and interpore spacing in the range
20–40 nm. Due to their reduced dimensions, they are sensitive to thermal fluctuations typical of 1D
superconductors and exhibit a nonzero resistance below the superconducting transition temperature,
Tc. Clear hysteresis and finite jumps in the I–V curves are also observed
Role of boundary conditions in improving the working characteristics of superconductor-based nanostructures
Electric transport properties and critical characteristics of of Superconductor/Ferromagnet nanostructures
Evidence of fractional matching states in nanoperforated Nb thin film grown on porous silicon
Resistive transitions have been measured on a perforated Nb thin film with a lattice of holes with period of the order of ten nanometers. Bumps in the dR/dH-vs.-H curves have been observed at the first matching field and its fractional values, , and . This effect has been related to different vortex lattice configurations made available by the underlying lattice of holes
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