Dresden 2009 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 5: Postersession Superconductivity: Materials - Fabrication and Properties

TT 5.22: Poster

Montag, 23. März 2009, 13:00–16:45, P1A

Evidence for static, site centered stripe order by photoemission on Bi₂Sr_1,2La_0,8CuO₆ — •Valentina Scherer¹, Christoph Janowitz¹, Beate Müller¹, Lenart Dudy¹, Alica Krapf¹, Helmut Dwelk¹, Recardo Manzke¹, Taichi Okuda², and Akito Kakizaki² — ¹Institut für Physik, Humboldt-Universität zu Berlin — ²Institute for Solid State Physics (ISSP),University of Tokyo, Japan

Bi₂Sr_1,2La_0,8CuO₆ single crystals with a single CuO₂-layer per unit cell, a nominal hole doping around n_H=0,1 and, vanishing T_C were grown and characterized. High resolution photoemission revealed an electronic structure decisively different from any hitherto reported one on Bi-cuprates. While no spectral weight, dispersion, or Fermi surface crossings along the nodal line could be detected, a strong buildup of spectral weight around the antinodal M-point occured. By comparison to spectral functions, dispersions, and Fermi surfaces from different calculations it will be shown that for this doping level indeed the site centered stripe model is realized.