• DOI:10.1103/PhysRevB.66.014502
• Corpus ID: 117774176

Surprises in the doping dependence of the Fermi surface in Bi(Pb)-2212

@article{Kordyuk2001SurprisesIT,
  title={Surprises in the doping dependence of the Fermi surface in Bi(Pb)-2212},
  author={Alexander A. Kordyuk and Sergey V. Borisenko and Mark S. Golden and S. Legner and Konstantin Nenkov and Martin Knupfer and J{\"o}rg Fink and Helmuth Berger and L{\'a}szl{\'o} Forr{\'o}},
  journal={Physical Review B},
  year={2001}
}

• A. Kordyuk, S. Borisenko, +6 authors L. Forró
• Published 17 April 2001
• Physics
• Physical Review B

A detailed and systematic ARPES 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 data reveal, in addition, a number of surprises. Firstly the FS area does not follow the usual curve describing Tc vs x for the hole doped cuprates, but is down-shifted in doping by ca. 0.05 holes per Cu site, indicating either the break-down of Luttinger's theorem or the consequences of a significant bi-layer splitting of the FS. Secondly, the strong k-dependence of the FS width is shown to be doping independent. Finally, the relative strength of the shadow FS has a doping dependence mirroring that of Tc.