Hard X-ray Cu $2p$ Core-Level Photoemission of High-$T_c$ Cuprate Superconductors

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dc.creatorTaguchi, M.
dc.creatorMatsunami, M.
dc.creatorChainani, A.
dc.creatorHoriba, K.
dc.creatorTakata, Y.
dc.creatorYamamoto, K.
dc.creatorEguchi, R.
dc.creatorYabashi, M.
dc.creatorTamasaku, K.
dc.creatorNishino, Y.
dc.creatorNishio, T.
dc.creatorUwe, H.
dc.creatorMochiku, T.
dc.creatorHirata, K.
dc.creatorHori, J.
dc.creatorIshii, K.
dc.creatorNakamura, F.
dc.creatorSuzuki, T.
dc.creatorShin, S.
dc.creatorIshikawa, T.
dc.date2006-12-28
dc.date.accessioned2026-07-07T07:37:37Z
dc.date.available2026-07-07T07:37:37Z
dc.descriptionWe have performed a detailed study of Cu $2p$ core-level spectra in single layer La$_{2-x}$Sr$_{x}$CuO$_{4}$, La doped Bi$_2$Sr$_{1.6}$La$_{0.4}$CuO$_{6+δ}$ (Bi2201) and bilayer Bi$_2$Sr$_{2}$CaCu$_{2}$O$_{8+δ}$ (Bi2212) high-temperature superconductors by using hard x-ray photoemission (HX-PES). We identify the Cu$^{2+}$ derived (i) the Zhang-Rice singlet (ZRS) feature, (ii) the $d^{n+1}\underline{L}$ (ligand screened) feature, (iii) the $d^{n}$ satellite feature, as well as the hole-doping derived high binding energy feature in the main peak. In Bi-based cuprates, intensities of the $d^{n}$ satellite features seem to be strongly enhanced compared to La$_{2-x}$Sr$_{x}$CuO$_{4}$. From x-ray photon energy dependent measurements, it is shown that the increased intensity in the satellite region is associated with Bi $4s$ core-level spectral intensity. The corrected $d^{n}$ satellite intensity is independent of the doping content or number of Cu-O layers. Our results suggest a correlation of the relative intensity of ZRS feature and hole-doping induced high binding energy spectral changes in the main peak with superconductivity.
dc.description6 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0612676
dc.identifierhttp://arxiv.org/abs/cond-mat/0612676
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/120834
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleHard X-ray Cu $2p$ Core-Level Photoemission of High-$T_c$ Cuprate Superconductors
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