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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2002     Display Documents



  history
ID: 7205.0, MPI für Festkörperforschung / FKF Publikationen 2002
Core-hole screening response in two-dimensional cuprates: A high-resolution x-ray photoemission study
Authors:Koitzsch, A.; Fink, J.; Golden, M. S.; Karlsson, K.; Jepsen, O.; Gunnarsson, O.; Miller, L. L.; Eisaki, H.; Uchida, S.; Yang, G.; Abell, S.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Physical Review B
Volume:66
Issue / Number:2
Sequence Number of Article:024519
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:We have studied the core level photoemission spectra of the
two-dimensional cuprates Sr2CuO2Cl2, Sr2CuO2Br2, Ca2CuO2Cl2,
Bi2Sr2CaCu2O8+delta, and Nd2CuO4, with particular focus on the
screening response to core-hole creation in the Cu-2p(3/2)
level. The influence of the apex positions on the shape of the
so-called main line is investigated, and found to be weak.
Additionally, an Anderson impurity model was used to fit the
shape of the main lines, obtaining good agreement with the data
from Nd2CuO4. For the other compounds, while the energy spread
of the two screening channels (local and nonlocal) is well
reproduced, the theory underestimates the width of the
nonlocally screened feature. The shapes of the main lines are
discussed in detail.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; IFW Dresden, Inst Solid State Res, POB 270016, D-01171 Dresden, Germany
; Univ Amsterdam, Van Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands
; Inst Nat, S-54128 Skovde, Sweden
; Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
; Iowa State Univ, Ames Lab, Ames, IA 50011 USA
; Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
; Univ Tokyo, Dept Superconduct, Bunkyo Ku, Tokyo 113, Japan
; Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England
Identifiers:ISI:000177338400114
ISSN:0163-1829
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