Electronic states in La2xSrxCuO4+δ probed by soft-x-ray absorption

C. T. Chen, F. Sette, Y. Ma, M. S. Hybertsen, E. B. Stechel, W. M. C. Foulkes, M. Schulter, S-W. Cheong, A. S. Cooper, L. W. Rupp, Jr., B. Batlogg, Y. L. Soo, Z. H. Ming, A. Krol, and Y. H. Kao
Phys. Rev. Lett. 66, 104 – Published 7 January 1991
PDFExport Citation

Abstract

Oxygen K-edge absorption spectra of carefully characterized La2xSrxCuO4+δ samples were measured using a bulk-sensitive fluoresence-yield-detection method. They reveal two distinct pre-edge peaks which evolve systematically as a function of Sr concentration. The measured spectra are quantitatively described by calculations based on the Hubbard model, including local Coulomb interactions and core-hole excitonic correlations. The absorption data are consistent with a description of electronic states based on a doped charge-transfer insulator.

  • Received 14 September 1990

DOI:https://doi.org/10.1103/PhysRevLett.66.104

©1991 American Physical Society

Authors & Affiliations

C. T. Chen, F. Sette, Y. Ma, M. S. Hybertsen, E. B. Stechel, W. M. C. Foulkes, M. Schulter, S-W. Cheong, A. S. Cooper, L. W. Rupp, Jr., B. Batlogg, Y. L. Soo, Z. H. Ming, A. Krol, and Y. H. Kao

  • AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill, New Jersey 07974
  • Condensed Matter Theory Division 1151, Sandia National Laboratories, Albuquerque, New Mexico 87185
  • Department of Physics, State University of New York, Buffalo, New York 14260

References (Subscription Required)

Click to Expand
Issue

Vol. 66, Iss. 1 — 7 January 1991

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×