Papers in Physics, vol. 5, art. 050007 (2013)
P. Esquinazi
Abstract
We review experimental results, from transport to magnetization measurements, on different graphite samples, from bulk oriented graphite, thin graphite fi lms to transmission electron microscope lamellae, that indicate the existence of granular superconductivity at temperatures above 100 K. The accumulated evidence speaks for a localization of the superconducting phase(s) at certain interfaces embedded in semiconducting crystalline regions with Bernal stacking order.