We report magnetization measurements performed on graphite--sulfur composites which demonstrate a clear superconducting behavior below the critical temperature Tc0 = 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.
@article{arxiv.cond-mat/0105329,
title = {Indication of Superconductivity at 35 K in Graphite-Sulfur Composites},
author = {R. Ricardo da Silva and J. H. S. Torres and Y. Kopelevich},
journal= {arXiv preprint arXiv:cond-mat/0105329},
year = {2009}
}