Search for dissertations about: "currentvoltage characteristics"

Found 3 swedish dissertations containing the words currentvoltage characteristics.

  1. 1. Characteristic properties of two-dimensional superconductors close to the phase transition in zero magnetic field

    Author : Kateryna Medvedyeva; Umeå universitet.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; superconductor; two dimensions; phase transition; vortex; currentvoltage characteristics; complex conductivity; scaling; critical exponents; XY-type models; dynamics; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik; fysik; Physics;

    Abstract : The main focus of this thesis lies on the critical properties of twodimensional (2D) superconductors in zero magnetic field. Simulations based on variants of the 2D XY model are shown to give characteristic features close to the phase transition which agree qualitatively with experimental data. READ MORE

  2. 2. Confinement and resonant phenomena in small Bi2Sr2CaCu2O8 mesa structures

    University dissertation from Stockholm : Department of Physics, Stockholm University

    Author : Sven-Olof Katterwe; Stockholms universitet.; [2010]
    Keywords : ;

    Abstract : In this thesis, intrinsic Josephson junctions, naturally formed in the stronglyanisotropic high-temperature superconductor Bi2Sr2CaCu2O8, are studied experimentally.Small mesa structures are fabricated on the surface of singlecrystals using micro- and nano-fabrication tools, focused ion beam is used toreduce the mesa-area to ≈ 1 × 1 μm2. READ MORE

  3. 3. Charging effects in small capacitance Josephson junction circuits

    University dissertation from Stockholm : Fysik

    Author : Peter Ågren; KTH.; [2002]
    Keywords : ;

    Abstract : This thesis describes fabrication, measurements and analysisof two different Josephson junction circuits; the Cooper pairtransistor (CPT) and the one dimensional Josephson junctionarray (JJA). All experiments are conducted in a dilutionrefrigerator with a base temperature of 15{30 mK. READ MORE