Superconductivity at 7.5 K and Ambient Pressure in Polycrystalline Pressed Samples of βp‐(BEDT‐TTF)2I3

Abstract
Communication: Polycrystalline pressed samples of β‐(BEDT‐TTF)2I3 exhibit bulk superconductivity, zero resistivity being observed at 3.2 K (see figure) a transition temperature which is surprisingly higher than that observed for single crystals of the same compound. magnified image