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Phys. Rev. B 69, 220505(R) (2004) [4 pages]

Origin of the shadow Fermi surface in Bi-based cuprates

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A. Koitzsch, S. V. Borisenko, A. A. Kordyuk, T. K. Kim, M. Knupfer, and J. Fink
Leibniz-Institute for Solid State and Materials Research, IFW-Dresden, P.O. Box 270116, D-01171 Dresden, Germany

M. S. Golden and W. Koops
Van der Waals-Zeeman Institute, University van Amsterdam, Valckenierstraat 65, NL-1018 XE Amsterdam, The Netherlands

H. Berger
Institute of Physics of Complex Matter, EPFL, CH-1015 Lausanne, Switzerland

B. Keimer and C. T. Lin
Max-Planck Institute für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany

S. Ono and Y. Ando
Central Research Institute of Electric Power Industry, Komae, Tokyo 201-8511, Japan

R. Follath
BESSY GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany

Received 7 January 2004; revised 12 May 2004; published 28 June 2004

We used angle-resolved photoemission spectroscopy to study the shadow Fermi surface in one layer Bi2Sr1.6La0.4CuO6+δ and two layer (Bi,Pb)2Sr2CaCu2O8+δ. We find the shadow band to have the same peak width and dispersion as the main band. In addition, the shadow band/main band intensity ratio is found to be binding-energy independent. Consequently, it is concluded that the shadow bands in Bi-based HTSC do not originate from atiferromagnetic interactions, but have a structural origin.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.69.220505
DOI:
10.1103/PhysRevB.69.220505
PACS:
74.72.Hs