For years, physicists have been trying to explain a quantum phenomenon that occurs in a large class of superconducting materials: Electrons in so-called 'strange metals' scatter at high rates in ways affected by temperature. Figuring out why this happens in certain unconventional metals could hold the keys to many quantum material puzzles, including high-temperature superconductivity, long sought after by physicists for a more efficient means of electrical energy transfer.
sample mounted by the “epoxy-free” method. SEM image of the PdCrO22device mounted using the “free-standing” method. The measured regions of two devices appear to be darker in the SEM image because the gold is removed from them. The rest of the devices, Pt contacts, and substrate are covered with sputtered gold.
lies in understanding the common thread across these materials that leads to this universal Planckian time scale. "As far as I know, this is one of the first unconventional compounds where we have a quantitative theory for transport starting from a microscopic model of the material, which already happens to be in great agreement with the experiment."
"The crucial piece of the puzzle turns out to be an unexpected cooperative process where electrons interact concomitantly with the vibrations of the crystal and the localized spins—the fundamental building blocks of magnetism," said Juan Felipe Mendez Valderrama, doctoral student in physics and co-lead author with Evyatar Tulipman of Israel's Weizmann Institute of Science.
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