Polaronic Behavior of Undoped High-Tc Cuprate Superconductors from Angle-Resolved Photoemission Spectra

O. Rösch, O. Gunnarsson, X. J. Zhou, T. Yoshida, T. Sasagawa, A. Fujimori, Z. Hussain, Z.-X. Shen, and S. Uchida
Phys. Rev. Lett. 95, 227002 – Published 21 November 2005

Abstract

We present angle-resolved photoemission spectroscopy (ARPES) data on undoped La2CuO4, indicating polaronic coupling between bosons and charge carriers. Using a shell model, we calculate the electron-phonon coupling and find that it is strong enough to give self-trapped polarons. We develop an efficient method for calculating ARPES spectra in undoped systems. Using the calculated couplings, we find the width of the phonon sideband in good agreement with experiment. We analyze reasons for the observed dependence of the width on the binding energy.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 25 April 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.227002

©2005 American Physical Society

Authors & Affiliations

O. Rösch1, O. Gunnarsson1, X. J. Zhou2,3, T. Yoshida4, T. Sasagawa5, A. Fujimori4, Z. Hussain3, Z.-X. Shen2, and S. Uchida4

  • 1Max-Planck-Institut für Festkörperforschung, D-70506 Stuttgart, Germany
  • 2Department of Applied Physics and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305, USA
  • 3Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, California 94720, USA
  • 4Department of Physics and Department of Complexity Science and Engineering, University of Tokyo, Tokyo, 113-0033, Japan
  • 5Department of Advanced Materials Science, University of Tokyo, Tokyo, Japan

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 95, Iss. 22 — 25 November 2005

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
×