Experimental demonstration of superconducting critical temperature increase in electromagnetic metamaterials
arXiv:1408.0704
Abstract
A recent proposal that the metamaterial approach to dielectric response engineering may increase the critical temperature of a composite superconductor-dielectric metamaterial has been tested in experiments with compressed mixtures of tin and barium titanate nanoparticles of varying composition. An increase of the critical temperature of the order of 0.15 K compared to bulk tin has been observed for 40% volume fraction of barium titanate nanoparticles. Similar results were also obtained with compressed mixtures of tin and strontium titanate nanoparticles.
18 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:1311.3277