Superconductivity in EuMo₆S₈ and EuMo₅WS₈ single crystals

The strong scattering of conduction electrons in metallic single crystals of EuMo6S8 and EuMo5WS8 can be ascribed to molybdenum spin fluctuations. Superconductivity appears under pressure only when the coherence length ξ0 is smaller than the electronic mean free path l. © 1986.