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    New Type of Superconductor identified

    September 22, 2020, Categories  Physics

    This illustration shows a crystal lattice of strontium ruthenate responding to various sound waves sent via resonant ultrasound spectroscopy as the material cools through its superconducting transition at 1.4 kelvin (minus 457 degrees Fahrenheit). The highlighted deformation suggests the material may be a new type of superconductor.   

    Until now, the history of superconducting materials has been a tale of two types: s-wave and d-wave. Now, Cornell researchers — led by Brad Ramshaw, the Dick & Dale Reis Johnson Assistant Professor in the College of Arts and Sciences — have discovered a possible third type: g-wave.

    Their paper, “Thermodynamic Evidence for a Two-Component Superconducting Order Parameter in Sr2RuO4,” published Sept. 21 in Nature Physics...

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