Origin of the shadow Fermi surface in Bi-based cuprates

Details Origin of the shadow Fermi surface in Bi-based cuprates Origin of the shadow Fermi surface in Bi-based cuprates

2004-01-08

arxiv.org/abs/cond-mat/0401114v2

Phys. Rev. B 69, 220505(R) (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 2 figures

Scientific paper

10.1103/PhysRevB.69.220505

We used angle-resolved photoemission spectroscopy to study the shadow Fermi surface in one layer Bi2Sr1.6La0.4CuO6+delta and two layer (Bi,Pb)2Sr2CaCu2O8+delta. We find the shadow band to have the same peakwidth 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 antiferromagnetic interactions but have a structural origin.

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