PELLEGRIN, E and NUCKER, N and FINK, J and SIMMONS, CT and KAINDL, G and BERNHARD, J and RENK, KF and KUMM, G and WINZER, K (1993) POLARIZED X-RAY-ABSORPTION STUDY OF TL2BA2CACU2O8 AND TL2BA2CA2CU3O10. PHYSICAL REVIEW B, 48 (14). pp. 10520-10523. ISSN 0163-1829,
Full text not available from this repository.Abstract
Polarization-dependent measurements of the 0 ls absorption edges of Tl2Ba2CaCu2O8 and Tl2Ba2Ca2Cu3O10 single crystals have been performed. They give evidence for an increase of the unoccupied 0 2p(x,y) density of states per unit cell close to the Fermi level related to the CuO2 planes by a factor of 1.5 by insertion of the third CuO2 plane. This leads to additional charge transfer to the Tl2O2 and Ba2O2 layers of these self-doped systems. The average number of doped holes per CuO2 plane and per formula unit for both materials is found to be close to other p-type doped cuprate superconductors with optimized superconducting transition temperature. From the Cu 2p3/2 edge Of Tl2Ba2Ca2Cu3O10, a small admixture of 12+/-2% of unoccupied states with 3d(3z2-r2) character to the empty Cu 3d states close to the Fermi level with predominantly 3d(x2-y2) symmetry was found.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HIGH-TC SUPERCONDUCTORS; CUPRATE SUPERCONDUCTORS; ELECTRONIC-STRUCTURE; SPECTRA; MODEL; PHOTOEMISSION; LA2-XSRXCUO4; HOLES; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/53758 |
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