Sarma, D. D. ; Strebel, O. ; Simmons, C. T. ; Neukirch, U. ; Kaindl, G. ; Hoppe, R. ; Müller, H. P. (1988) Electronic structure of high-Tc superconductors from soft-x-ray absorption Physical Review B: Condensed Matter and Materials Physics, 37 (16). pp. 9784-9787. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v37/i16/p9784_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.37.9784
Abstract
A series of high-Tc superconductors was studied using soft x-ray absorption spectroscopy at the Cu-LII,III thresholds. From a comparison with CuO and NaCuO2, it is shown that these superconductors contain mostly 3d9 and 3d9L (L=oxygen ligand hole) configurations in the ground state, with negligible amounts of Cu(III) 3d8. The spectral weights of the 3d9L components are found to be higher for the YBa2Cu3O7-type superconductors than for the La2CuO4-derived compounds and exceed the values expected from oxygen stoichiometry.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 46235 |
| Deposited On: | 02 Jul 2011 13:53 |
| Last Modified: | 02 Jul 2011 13:53 |
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