FP6 priority
1.1.3   Nanotechnologies and Nanosciences, Knowledge-based Multifunctional Materials and New Production Processes and Devices
Title of the proposal

Nanostructures for sensors, nanometrology and cryoelectronic devices

Slovak Academy of Sciences, Institute of Electrical Engineering
Dubravska cesta 9, 84239 Bratislava, Slovak Republic
Doc.RNDr. Andrej PLECENIK, DrSc.
+421 2 54775820

Research subject for a potential FP6 project

The group of the Cryoelectronic Department has the experience in the preparation of super-conducting (MgB2, YBa2Cu3O7-x) and dielectric thin films (Al2O3, CeO2, SrTiO3), as well as tunnel junctions (including Josephson junctions) and cryoelectronic devices (SQUIDs) prepared on them. The group dispose of vacuum equipments for preparation of metallic, dielectric and superconducting thin film, equipments for physical (in Ar ion beam) and plasma chemical etching of thin films, optical and electron lithography (in cooperation with the Institute of Informatics SAS), measurements of transport properties down to 1.3 K, as well as down to 50 mK (in cooperation with the Institute of Experimental Physics SAS), and measurement in magnetic field up to 14 T from the temperature 2.2K to 300 K. A nanolitography by means of Scanning Probe Microscope is available in last time. For characterization of thin film and Josephson junctions´ quality, as well as interfaces in tunnel junctions, the microwave measurements in the range from 10 GHz to 100 GHz and tunnelling spectroscopy are used.On the base of the above mentioned possibilities the group of the Cryoelectronic Department can participate on the research programs oriented on the preparation and characterization of structures in micrometers and sub-micrometers dimensions. The main interest of the group are structures for detectors (single photon detector), nanometrology (current standard) and cryoelectronic devices based on the high Tc (YBa2Cu3O7-x) and medium Tc (MgB2) superconductors.

Recent international cooperation of the research team

University of Rochester, Rochester, USA; University of Nice Sophia Antipolis, Nice, France, Friedrich-Schiller-Universitaet Jena, Jena, Germany; Institute of Physics PAS Warsaw, Poland; Institute of Physics ASCR Prague, Czech Republik, Institute of Metal Physics NASU, Kiev, Ukraine, Donetsk Physical and Technical Institute NASU, Donetsk, Ukraine; , Katholieke Universiteit Leuven, Leuven, Belgium; Institut fur Schicht und Ionentechnik (Julich), Germany

Proposer´s relevant publications related to the research subject

A.Plecenik, M.Grajcar, S.Benacka, P.Seidel, A.Pfuch: Finite- quasipartisle- lifetime in differential conductance of Bi2Sr2CaCu2Oy/Au junction, Physical Review B 49 (1994) 10016 – 10019.
M.Grajcar, A.Plecenik, P.Seidel, V.Vojtanik, K.Barholz: Asymmetry and quasi-linear background of differential conductance characteristics of HTS-metal tunnel junctions, Phys.Rev.B 55 (1997) 11738 - 11745.
A.Gilabert, A.Plecenik, K.Frohlich, S.Gazi, M.Pripko, Z.Mozolova, D.Machajdik, S.Benacka, M.G.Medici, M.Grajcar and P.Kus, Photoinduced Insulator-Metal Transition in LaMnO-Al2O3-Nb Tunnel Junctions, Appl.Phys.Lett. 78 (2001) 1712 - 1714.
A.Plecenik, L.Satrapinsky, P.Kus, S.Gazi, S.Benacka, I.Vavra and I.Kostic, MgB2 superconductor thin films on Si and Al2O3 substrates, Physica C 363 (2001) 224-230.