[A]n interdisciplinary research team at the University of Illinois at Urbana-Champaign, in collaboration with researchers at Brookhaven National Laboratorys Condensed Matter Physics and Materials Science Department, has measured superconductive surface states in TIs where the bulk charge carriers were successfully depleted. The research paper, "Symmetry protected Josephson supercurrents in three-dimensional topological insulators," was published ... in Nature Communications.