Physicists surprised by disappearing and reappearing superconductivity in iron selenium chalcogenides

(PhysOrg.com) — Superconductivity is a rare physical state in which matter is able to conduct electricity — maintain a flow of electrons — without any resistance. This phenomenon can only be found in certain materials at low temperatures, or can be induced under chemical and high external pressure conditions. Research to create superconductors at higher temperatures has been ongoing for two decades with the promise of significant impact on electrical transmission.

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Physicists surprised by disappearing and reappearing superconductivity in iron selenium chalcogenides