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Doping dependence of the Fermi surface in ( B i , P b ) 2 Sr </…

2002; American Physical Society; Volume: 66; Issue: 1 Linguagem: Inglês

10.1103/physrevb.66.014502

1095-3795

A. A. Kordyuk, С. В. Борисенко, M. S. Golden, S. Legner, K. Nenkov, M. Knupfer, J. Fink, H. Berger, L. Forró, R. Follath,

Magnetic properties of thin films

A detailed and systematic angle-resolved photoemission spectroscopy investigation of the doping dependence of the normal-state Fermi surface (FS) of modulation-free (Pb,Bi)-2212 is presented. The FS does not change in topology away from hole like at any stage. The FS area does not follow the usual curve describing ${T}_{c}$ vs x for the hole-doped cuprates, but is downshifted in doping by ca. 0.05 holes per Cu site, indicating the consequences of a significant bilayer splitting of the FS across the whole doping range. The strong k dependence of the FS width is shown to be doping independent. The relative strength of the shadow FS has a doping dependence mirroring that of ${T}_{c}.$