What Is The Pseudogap?

Scientists are launching a three-pronged attack on one of the most obstinate puzzles in materials sciences: what is the pseudogap? They used three complementary experimental approaches to investigate a single material, the high-temperature superconductor Pb-Bi2201 (lead bismuth strontium lanthanum copper-oxide). Their results are the strongest evidence yet that the pseudogap phase, a mysterious electronic state peculiar to high-temperature superconductors, is not a gradual transition to superconductivity in these materials, as some have long believed. Instead, it is a distinct phase of matter. The pseudogap mystery read more

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