Regensburg 2010 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 9: SC: Poster Session
TT 9.9: Poster
Montag, 22. März 2010, 14:00–18:00, Poster A
Out-of-plane transport properties of YBa2Cu3O7/PrBa2Cu3O7 superlattices — •Ayman El Tahan1, Fabrizio Porrati2, Michael Huth2, Hermann Adrian1, and Gerhard Jakob1 — 1Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz — 2Physikalisches Institut, Goethe-Universität Frankfurt, 60438 Frankfurt
The aim is to show how a change in superlattice modulation effects the transport properties in the c-axis direction, and whether a coherent Josephson coupling between YBa2Cu3O7 layers separated by PrBa2Cu3O7 sheets can appear or not. The I(V)-characteristic and differential conductivity G(V)=dI(V)/dV at different temperature will be measured. For this purpose we prepared the samples by two methods. The first one by wiring a mesa structure with holes of quadratic shape and dimensions of 30µm × 30µm and 20µm × 20µm, respectively. The second one by focused-ion beam cutting of a bridge with a width 1µm. In these cases the current J will flow vertically through the YBa2Cu3O7/PrBa2Cu3O7 multilayers.