Realistic description of electron-energy-loss spectroscopy for one-dimensional Sr2CuO3

A. Hübsch, J. Richter, C. Waidacher, K. W. Becker, and W. von der Linden
Phys. Rev. B 63, 205103 – Published 13 April 2001
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Abstract

We investigate the electron-energy-loss spectrum of one-dimensional undoped CuO3 chains within an extended multiband Hubbard model and an extended one-band Hubbard model, using the standard Lanczos algorithm. Short-range intersite Coulomb interactions are explicitly included in these models, and long-range interactions are treated in the random-phase approximation. The results for the multiband model with standard parameter values agree very well with experimental spectra of Sr2CuO3. In particular, the width of the main structure is correctly reproduced for all values of momentum transfer. We find no evidence for enhanced intersite interactions in Sr2CuO3.

  • Received 13 November 2000

DOI:https://doi.org/10.1103/PhysRevB.63.205103

©2001 American Physical Society

Authors & Affiliations

A. Hübsch1, J. Richter1, C. Waidacher1, K. W. Becker1, and W. von der Linden2

  • 1Institut für Theoretische Physik, Technische Universität Dresden, D-01062 Dresden, Germany
  • 2Institut für Theoretische Physik, Technische Universität Graz, Petersgasse 16, A-8010 Graz, Austria

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Vol. 63, Iss. 20 — 15 May 2001

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