Regensburg 2004 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 8: Postersitzung I: Supraleitung

TT 8.43: Poster

Montag, 8. März 2004, 14:30–19:00, Poster A

Electronic structure of doped Bi-cuprates — •R.-S. Unger, M. Schneider, T. Stemmler, L. Lasogga, H. Dwelk, A. Krapf, C. Janowitz und R. Manzke — Institut für Physik, Humboldt-Universität zu Berlin, Newtonstr.15, 12489 Berlin

We present angle-resolved photoemission data from La-doped n=1 and Y-doped n=2 Bi₂Sr_2−y(La_y) Ca_1−n−x(Y_x)Cu_nO_2n+4+δ single crystals. The crystal quality is proved by Laue and LEED, the super-conducting properties by susceptibility measurements. So we have the opportunity to investigate the electronic structure of a high-Tc superconductor and its parent compound over the entire hole doping range. We discuss our measured spectra series of the metallic/superconducting and insulating state of the Bi-cuprate single crystals along high symmetric directions of the Brillouin zone. This work was supported by the BMBF project no. MA2371/1-3