Search for dissertations about: "high temperature superconductors"

Showing result 1 - 5 of 63 swedish dissertations containing the words high temperature superconductors.

  1. 1. Phase transitions in high-temperature superconductors

    University dissertation from Stockholm : KTH

    Author : Jack Lidmar; KTH.; [1998]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Superconductivity; Vortices; Phase transitions; Strongly correlated fermions; High-temperature superconductivity; Monte Carlo simulations.; TECHNOLOGY; TEKNIKVETENSKAP;

    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

  2. 2. Photoelectron Spectroscopy of High Temperature Superconductors and Related Compounds

    University dissertation from Henrik Nylén, Dept. of Synchrotron Radiation Research, Box 118, S-221 00 Lund

    Author : Henrik Nylén; Lunds universitet.; Lund University.; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; egenskaper elektriska; supraledare; magnetiska och optiska ; magnetisk resonans; X-ray Absorption; Photoelectron Spectroscopy; Resonant Photoemission; Condensed matter:electronic structure; High Temperature Superconductors; Angle Resolved Photoemission; electrical; supraconductors; magnetic and optical properties; magnetic resonance; spectroscopy; spektroskopi; Kondenserade materiens egenskaper:elektronstruktur; relaxation; Fysicumarkivet A:1998:Nylén;

    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

  3. 3. Hysteresis Modelling of High Temperature Superconductors

    University dissertation from Lausanne, Switzerland : Swiss Federal Institute of Technology Lausanne

    Author : Mårten Sjöström; Mittuniversitetet.; [2001]
    Keywords : nonlinear modelling; Preisach model; hysteresis; superconductor;

    Abstract : .... READ MORE

  4. 4. Resistivity and the solid-to-liquid transition in high-temperature superconductors

    University dissertation from Stockholm : KTH

    Author : Beatriz Espinosa Arronte; KTH.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; high-temperature superconductors; vortex dynamics; vortex solid-to-liquid transition; critical scaling; glass transition; Bose glass; heavy-ion irradiation; YBCO; Tl2Ba2CaCu2O8 d; oxygen deficiency.; NATURAL SCIENCES Physics Condensed matter physics; NATURVETENSKAP Fysik Kondenserade materiens fysik;

    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

  5. 5. Studies of magnetoresistance and Y substitutions in YBa2Cu3O7-delta high temperature superconductors

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Magnus Andersson; KTH.; [1992]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; high-temperature superconductors; elctrical conductivity; magnetoresistance; measurement systems; YBa2Cu3O7; substitutional effects;

    Abstract : .... READ MORE