Photoemission study of YBa2Cu3O7 through the superconducting transition: Evidence for oxygen dimerization.
作者： DD Sarma , K Sreedhar , P Ganguly , CNR Rao , None
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摘要: Photoemission spectra of $\mathrm{Y}{\mathrm{Ba}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7\ensuremath{-}\ensuremath{\delta}}$ in the normal and superconducting states provide direct evidence for dimerization oxygen below ${T}_{c}$. ${\mathrm{Cu}}^{2+}$ is found to reduce ${\mathrm{Cu}}^{1+}$ concomitantly. These changes may be vital importance mechanism high-temperature superconductivity.
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