Regensburg 2013 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 12: Poster Session Superconductivity
TT 12.51: Poster
Montag, 11. März 2013, 15:00–19:00, Poster D
Transport, magnetic and structural properties of YBCO/LCMO heterostructures grown on STO (110) substrates — •Luqman Mustafa1, Soltan Soltan1,2, Gennady Logvenov1, Hanns-Ulrich Habermeier1, and Bernhard Keimer1 — 1Max Planck Institute for Solid State Research, Heisenbergstraße 1, D-70569 Stuttgart, Germany — 2Faculty of science, Helwan University, 11792-Helwan, Cairo, Egypt
YBCO/LCMO bi- and multilayers were grown on STO (110) substrates by Pulsed Laser Deposition (PLD) technique with the goal to study the interface of an oxide ferromagnet and a cuprate superconductor where the CuO2 planes are perpendicular to the film plane. The structure was investigated by X-ray diffractometry, transport and magnetic properties were studied by conventional four-point-probe and SQUID techniques respectively. Depending on the preparation conditions the single layer YBCO as well as bi-layers can be grown in the (110), (103)/(-103), as well as mixed orientations. Large anisotropy of electrical conductivity in these films was observed in case of (110)-oriented YBCO layer and less pronounced anisotropy in case of (103)-oriented one. We present a detailed analysis of the anisotropy of the magnetization of such bi- and multilayers emphasizing its relation to the orientation of the YBCO film.