Search for dissertations about: "High Temperature Superconductors"
Showing result 1 - 5 of 94 swedish dissertations containing the words High Temperature Superconductors.
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1. Phase transitions in high-temperature superconductors
Abstract : Thermal fluctuations and disorder strongly influence the behaviour of hightemperature superconductors. In particular the vortices play a key role in determining their properties. In this thesis the main focus lies on phase transitions, both in ultra-thin films and in three-dimensional systems, which are driven by vortex fluctuations. READ MORE
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2. Photoelectron Spectroscopy of High Temperature Superconductors and Related Compounds
Abstract : In this thesis, the high temperature superconductors (HTSC) Ba0.6K0.4BiO3, La2CuO4+x, Bi2Sr2Ca1-xYxCu2O 8+d, Bi2Sr2CuO6+d as well as semiconducting Ba0.9K0. READ MORE
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3. Hysteresis Modelling of High Temperature Superconductors
Abstract : .... READ MORE
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4. Resistivity and the solid-to-liquid transition in high-temperature superconductors
Abstract : In high-temperature superconductors a large region of the magnetic phase diagram is occupied by a vortex phase that displays a number of exciting phenomena. At low temperatures, vortices form a truly superconducting solid phase which at high temperatures turns into a dissipative vortex liquid. READ MORE
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5. High Temperature Superconducting and Tunable Ferroelectric Microwave Devices
Abstract : This thesis addresses some applications of High Temperature Superconductors (HTS) and ferroelectric materials in tunable microwave devices and circuits. The work is divided into three main areas: i) modeling of multilayered structures including ferroelectric layers, ii) realization and characterization of tunable coplanar waveguides (CPW), capacitors and resonators based on ferroelectrics, and iii) an investigation of microstrip HTS K-band filters. READ MORE