Sökning: "Superconductivity"

Visar resultat 21 - 25 av 29 uppsatser innehållade ordet Superconductivity.

  1. 21. Utveckling av styrprogram för mätning av kritisk strömtäthet i supraledare

    Uppsats för yrkesexamina på avancerad nivå, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Johan Westlund; Oliver Nikolic; [2014]
    Nyckelord :;

    Sammanfattning : Superconductivity is in the process of going from research into engineering disciplines. It is desirable to determine whether a particular superconducting material is applicable for a specific application by determining its physical limitations. LÄS MER

  3. 22. Efficient Computational Procedure for the Analytic Continuation of Eliashberg Equations

    Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :Joakim Johansson; Fredrik Lauren; [2014]
    Nyckelord :superconductivity; analytic continuation; BCS theory;

    Sammanfattning : The superconducting order parameter and the mass renormalization function can be solved either at discrete frequencies along the imaginary axis, or as a function of continuous real frequencies. The latter is done with a method called analytic continuation. LÄS MER

  4. 23. Super conducting quantum bits - a comparison of different designs

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Joakim Persson; [2014]
    Nyckelord :;

    Sammanfattning : This paper treats the current progress in the research of superconducting quantum bits. It includes background theory in the two distinct fields of superconductivity and quantum bits and how these two research fields relate. Different designs of superconducting quantum bits are presented including the derivation of their respective Hamiltonian. LÄS MER

  5. 24. Point defects in the (d+id)-wave superconducting state of heavily doped graphene

    Master-uppsats, Institutionen för fysik och astronomi

    Författare :Tomas Löthman; [2013]
    Nyckelord :Graphene; Superconductivity; Defects; Van Hove singularity;

    Sammanfattning : Previous studies have suggested that the material graphene might transition into an electron-electron interaction driven, unconventional, time-reversal-symmetry-breaking, (d+id)wave superconducting state upon either significant electron or hole doping, and, in particular, upon doping to the Van Hove singularity. As defects are likely to be introduced in the doping process, we are, in this text, concerned with the effects of defects on this superconducting state near the Van Hove singularity doping. LÄS MER

  7. 25. Numerical Studies of Vortex Core States in Type II Superconductors

    Master-uppsats, Institutionen för fysik

    Författare :Christin Edblom; [2012]
    Nyckelord :superconductivity; type II; vortex; s-wave; Bogoliubov-de Gennes; supraledning; typ II; virvel; s-våg; Bogoliubov-de Gennes;

    Sammanfattning : In this thesis, we study an isolated vortex in an s-wave superconductor by solving the Bogoliubov-de Gennes equations self-consistently on a disc. We calculate the order parameter and supercurrent profiles, as well as the distribution of quasiparticle states. LÄS MER