Berlin 2012 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 33: Superconductivity, Measuring Devices, Matter at Low Temperature: Poster Session

TT 33.49: Poster

Mittwoch, 28. März 2012, 15:00–19:00, Poster B

Charge transport through 1D arrays of small capacitance Josephson junctions — •Jochen Zimmer¹, Andreas Fiebig¹, Roland Schäfer², Hannes Rotzinger¹, and Alexey V. Ustinov¹ — ¹Physikalisches Institut, Karlsruhe Institute of Technology — ²Institut für Festkörperphysik, Karlsruhe Institute of Technology

We investigate one-dimensional arrays of small capacitance Josephson junctions, fabricated by conventional e-beam lithography techniques. These arrays can serve as model systems for the study of superconductor-insulator transitions as found in thin disordered superconducting films. For sufficiently low Josephson energy, the arrays we fabricated exhibit a pronounced Coulomb blockade, i.e. insulating behavior. We studied the transport properties of the arrays in a voltage-bias setup. Data taken at several array lengths and different temperatures in the Coulomb blockade regime and at finite conductance will be presented.