Superconductivity in FeTe{1-x}S_x induced by electrochemical reaction using ionic liquid solution

摘要

Superconductivity in FeTe0.8S0.2 is successfully induced by anelectrochemical reaction using an ionic liquid solution. A clear correlationbetween the Fe concentration in the solution and the manifestation ofsuperconductivity was confirmed, suggesting that superconductivity was inducedby the deintercalation of excess iron.