corner
corner
APS » Journals » Phys. Rev. B » Volume 62 » Issue 12
< Previous Article | Next Article >

Phys. Rev. B 62, 7845–7849 (2000)

Dynamics of a hole in a CuO4 plaquette: Electron energy-loss spectroscopy of Li2CuO2

Download: PDF (169 kB) Buy this article Export: BibTeX or EndNote (RIS)

S. Atzkern, M. Knupfer, M. S. Golden, and J. Fink
Institut für Festkörper- und Werkstofforschung Dresden, P.O. Box 270016, D-01171 Dresden, Germany

C. Waidacher, J. Richter, and K. W. Becker
Institut für Theoretische Physik, Technische Universität Dresden, D-01062 Dresden, Germany

N. Motoyama, H. Eisaki, and S. Uchida
Department of Superconductivity, The University of Tokyo, Bunkyo-ku, Tokyo 113, Japan

Received 26 January 2000; published in the issue dated 15 September 2000

We have measured the energy- and momentum-dependent loss function of Li2CuO2 single crystals by means of electron energy-loss spectroscopy in transmission. Using the same values for the model parameters, the low-energy features of the spectrum as well as published Cu 2p3/2 x-ray photoemission data of Li2CuO2 are well described by a cluster model that consists of a single CuO4 plaquette only. This demonstrates that charge excitations in Li2CuO2 are strongly localized.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.62.7845
DOI:
10.1103/PhysRevB.62.7845
PACS:
71.27.+a, 71.45.Gm, 71.10.Fd
 
< Previous Article | Next Article >