Indication of Superconductivity at 35 K in Graphite-Sulfur Composites
arXiv:cond-mat/0105329 · doi:10.1103/PhysRevLett.87.147001
Abstract
We report magnetization measurements performed on graphite--sulfur composites which demonstrate a clear superconducting behavior below the critical temperature T$_{c0}$ = 35 K. The Meissner-Ochsenfeld effect, screening supercurrents, and magnetization hysteresis loops characteristic of type-II superconductors were measured. The results indicate that the superconductivity occurs in a small sample fraction, possibly related to the sample surface.
published version