A 2017 theory proposed by Rice University physicists to explain the contradictory behavior of an iron-based high-temperature superconductor is helping solve a puzzle in a different type of unconventional superconductor, the "heavy fermion" compound known as CeCu2Si2.
An international team from the U.S., China, Germany and Canada reported the findings this week in the Proceedings of the National Academy of Sciences (PNAS). The study focused on a cerium, copper and silicon composite whose strange behavior in 1979 helped usher in the multidisciplinary field of quantum materials.
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