Size dependence of the Tc and the superconducting energy gap in nanocrystalline thin films of Nb

Sangita Bose, Pratap Raychaudhuri, Rajarshi Banerjee +2

In nanocrystalline Nb films, the superconducting Tc decreases with a reduction in the average particle size below 20nm. We correlate the decrease in Tc with a reduction in the supe…