Regensburg 2010 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 9: SC: Poster Session
TT 9.5: Poster
Montag, 22. März 2010, 14:00–18:00, Poster A
Static stripe ordering in underdoped Bi2201 and Bi(Pb)2201 single crystals — •Valentina Scherer, Christoph Janowitz, Beate Müller, Lenart Dudy, Alica Krapf, Helmut Dwelk, and Recardo Manzke — Institut für Physik, Humboldt-Universität zu Berlin
Underdoped Bi2201 and Bi(Pb)2201 single crystals with a nominal hole doping of nh=1/10 and nh=1/8 were investigated using high resolution photoemission and transport measurements. By photoemission measurements spectral functions, dispersions, and Fermi surfaces were detected that correspond to calculations of the site centered stripe model. The resistivity curves exhibit typical transitions due to spin ordering as already found in other stripe phase materials as LSCO (cite Tranquada, Phys. Rev. B 78, 174529 (2008)). Close correspondence between changes of Fermi surface features and resistivity curves is found. Thus a static site centered stripe phase ordering of charge and spin degrees of freedom is the most plausible explanation for the findings, establishing stripes as playing an important role in another class of HTC materials, namely the Bi-cuprates.