KLAUDA, M and MARKL, J and FINK, C and LUNZ, P and SAEMANNISCHENKO, G and RAU, F and RANGE, KJ (1994) ELECTRONIC-PROPERTIES OF ELECTRON-DOPED ND2-XCEXCUO4-DELTA, SR1-XNDXCUO2-DELTA, AND HOLE-DOPED ND1.4CE0.2SR0.4CUO4-DELTA STUDIED BY PHOTOELECTRON-SPECTROSCOPY. JOURNAL OF SUPERCONDUCTIVITY, 7 (2). pp. 485-487. ISSN 0896-1107,
Full text not available from this repository.Abstract
We present investigations on the electronic structure of the recently discovered, electron-doped infinite-layer compound Sr1-xNdxCuO2-delta (T(c) almost-equal-to 40 K) by means of photoelectron spectroscopy with synchrotron radiation. This system is compared with the two closely related cuprates Nd2-xCeCuO4-delta (electron doped) and Ndl.4Ce0.2Sr0.4CuO4-delta (hole doped). Valence band spectra in the Cu 3p-->3d resonance are interpreted in terms Of CuO4 (n-doped compounds) and CuO5 (p-doped system) cluster models. From our calculations we find a considerably higher Cu 3d Coulomb correlation for the electron-doped compounds as well as a very low Cu-O hybridization for the infinite-layer system. Partial Nd spectra of Sr0.85Nd0.15CuO2-delta show the Nd dopants to be trivalent, thus confirming the infinite-layer compound to be electron doped. Analysis of partial Nd valence bands and magnetic susceptibilities of Nd2-xCexCuO4-delta and Nd1.4Ce0.2Sr0.4CuO4-delta gives very similar electronic parameters and antiferromagnetic correlations between Nd spins for both cuprates.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; ELECTRON-DOPED HTSC; INFINITE-LAYER COMPOUND; PHOTOELECTRON SPECTROSCOPY; COULOMB CORRELATION |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:40 |
| URI: | https://pred.uni-regensburg.de/id/eprint/53374 |
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