Dresden 2006 – wissenschaftliches Programm
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TT: Tiefe Temperaturen
TT 1: Superconductivity: Tunnelling, Josephson Junctions, SQUIDs
TT 1.1: Vortrag
Montag, 27. März 2006, 09:30–09:45, HSZ 02
Intrinsic Josephson junction on misaligned Tl-2212 thin films with different tilt angle — •Michael Mans1, Matthias Büenfeld1, Henrik Schneidewind2, Frank Schmidl1, Marco Diegel2, and Paul Seidel1 — 1Institute of Solid State Physics, Friedrich-Schiller-University Jena, Helmholtzweg 5, D 07743 Jena, Germany — 2Institute for Physical High Technology (IPHT) Jena, P.O.B. 100239, D 07702 Jena, Germany
Tl-2212 films are grown in a two step process. An amorphous Ba-Ca-Cu-O precursor are sputtered by rf sputtering. Subsequent it will oxythallinized into the Tl-2212 phase. On misaligned LaAlO3 substrates the Tl-2212 grows with Cu-O planes tilted to the surface. So it is possible to fabricate microbridges which contain serial arrays of intrinsic Josephson junctions. We present structural and electrical measurements on such arrays for different misalignment angles. The electrical behaviour will be discussed in respect to the possibility of phase synchronisation. The experimental data will be compared with theoretical calculations of serial arrays of Josephson junctions with and without shunts.