Sarma, D. D. ; Sen, P. ; Carbone, C. ; Cimino, R. ; Gudat, W. (1989) High-energy spectroscopic study of YBa2Cu2.7Fe0.3O6.9 with photon energy near the O 1s threshold Physical Review B: Condensed Matter and Materials Physics, 39 (16). pp. 12387-12390. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v39/i16/p12387_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.39.12387
Abstract
Photoemission experiments with hν near the O 1s threshold exhibit a resonant enhancement of Cu 3d8 feature in the valence-band region of YBa2Cu2.7Fe0.3O6.9 (Tc~40 K). This first-ever observation of an interatomic resonance provides direct experimental indication of considerable hybridization between Cu 3d and O 2p states. Comparing the photoemission results with the x-ray absorption spectra (XAS) at O K edge, we show that the 528-eV peak in the XAS of these compounds cannot be attributed to stoichiometry induced holes at EF, contrary to previous interpretation. We discuss various implications of our observations.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 46378 |
| Deposited On: | 04 Jul 2011 11:38 |
| Last Modified: | 04 Jul 2011 11:38 |
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