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arxiv: cond-mat/0401114 · v2 · submitted 2004-01-08 · ❄️ cond-mat.str-el · cond-mat.supr-con

Origin of the shadow Fermi surface in Bi-based cuprates

A. Koitzsch , S. V. Borisenko , A. A. Kordyuk , T. K. Kim , M. Knupfer , J. Fink , M. S. Golden , W. Koops
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H. Berger B. Keimer C. T. Lin S. Ono Y. Ando R. Follath
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classification ❄️ cond-mat.str-el cond-mat.supr-con
keywords shadowbandbi-baseddeltafermilayermainorigin
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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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