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The Cheshire Cat’s grin: Cooper pairs found above superconducting critical temperature in pair density waves

A Fourier transform revealing spatial patterns on the surface at 300 millikelvins. A charge density wave signals the presence of the pair density wave. The background is tellurium atoms on the surface of uranium ditelluride. @University of Illinois Urbana-Champaign’s Grainger College of Engineering Physicists with the University of Illinois Urbana-Champaign’s Grainger College of Engineering have identified a new form of superconducting behavior. Experiments on the metal uranium ditelluride...