Origin of the shadow Fermi surface in Bi-based cuprates

Authors :: Koitzsch, A.
Borisenko, S.V.
Kordyuk, A.A.
Kim, T.K.
Knupfer, M.
Fink, J.
Golden, M.S.
Koops, W
Berger, H.
Liang, B.
Maljuk, A.
Lin, C.T.
Keimer, B.
Ono, S.
Ando, Y.
Follath, R.
Hard Condensed Matter (WZI, IoP, FNWI)
Source :: Physical Review B, 69. American Physical Society
Publication Year :: 2004
Abstract: 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 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

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