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VOLUME 39 (1984) | ISSUE 1 | PAGE 12
Normal-pressure superconductivity in an organic metal (BEDT-TTF)2I3 [bis (ethylene dithiolo) tetrathiof ulvalene triiodide]
A new organic metal, (BEDT-TTF)2I3, which does not have a dielectric instability and which goes over to the superconducting state at normal pressure with Tc = 1.4 — 1.5 K, has been synthesized. In very pure specimens, a change in the temperature behavior of the resistance, which is seen as a sharp increase in the rate at which the resistance drops with decreasing temperature, occurs at Τ = 4 К. This change in the temperature behavior of the resistance has not been observed in other organic superconductors.