Abstract:We present oxygen K soft x-ray emission spectra for the YBa2Cu30 compounds with x nominally equal to 6, 6.5, and 7 and compare them with x-ray emission spectra determined from recent band-structure calculations. The K emission spectrum of 0 provides a measure of the p-type local partial density of states (p-LPDOS) at the oxygen sites. As x decreases from 7 -8 to about 6.5, a chemical shift of the entire spectrum to lower energy indicates that screening is modified for all oxygen sites. The integrated intensity… Show more
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