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A re-examination of the oxygen isotope effect in ARPES spectra of Bi2212

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Physica C: Superconductivity, (октября 2007)

Аннотация

We have re-examined the oxygen isotope effect in high-temperature superconductors Bi2Sr2CaCu2O8+δ using high-precision angle-resolved photoemission spectroscopy with low-energy photons in order to elucidate the origin of the kink. The results taken with a much improved energy and momentum resolution showed the absence of the reported unusual oxygen isotope effect.

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