Search for dissertations about: "Vortex josephson"

Showing result 1 - 5 of 9 swedish dissertations containing the words Vortex josephson.

  2. 1. Multicomponent superconductivity : Vortex matter and phase transitions

    Author : Johan Carlström; Egor Babaev; Leo Radzihovsky; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Superconductivity; Ginzburg Landau; field theory; Iron pnictide;

    Abstract : The topic of this thesis is vortex-physics in multi component Ginzburg- Landau models. These models describe a newly discovered class of super- conductors with multiple superconducting gaps, and possess many properties that set them apart from single component models. READ MORE

  4. 2. Phase transitions and vortex structures in multicomponent superconductors

    Author : Karl Sellin; Egor Babaev; Astrid S. de Wijn; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; multicomponent superconductors; superconductivity; phase transitions; monte carlo; vortices; vortex structure formation; competing interactions;

    Abstract : Theoretical aspects of multicomponent superconductivity and systemswith competing interactions are studied using Monte Carlo techniques.Motivated by recent experimental and theoretical results of complex struc-ture formation of vortices in multicomponent systems, possible vortex struc-ture formations due to vortex interactions that are not purely attractive orrepulsive are considered. READ MORE

  5. 3. Vortex-matter in Multi-component Superconductors

    Author : Johan Carlström; Mats Wallin; Vladimir Krasnov; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Superconductivity;

    Abstract : The topic of this thesis is vortex-physics in multi component Ginzburg- Landau models. These models describe a newly discovered class of supercon- ductors with multiple superconducting gaps, and posses many properties that set them apart from single component models. READ MORE

  6. 4. Dynamics of Vortices and Charges in Two Dimensional Arrays of Small Josephson Junctions

    Author : ChiiDong Chen; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis is based on experimental work on two dimensional (2D) Josephson junction arrays. The junctions are small (~ 0.004~0.04 µm2) so that the charging energy E~ e2/2C associated with the junction capacitance C is large. READ MORE

  7. 5. Mesoscopic phenomena in hybrid superconductor/ferromagnet structures

    Author : Taras Golod; Vladimir Krasnov; Alexandre Bouzdine; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Condensed matter physics; Kondenserade materiens fysik; fysik; Physics;

    Abstract : This thesis explores peculiar effects of mesoscopic structures revealed at low temperatures. Three particular systems are studied experimentally: Ferromagnetic thin films made of diluted Pt1-xNix alloy, hybrid nanoscale Nb-Pt1-xNix-Nb Josephson junctions, and planar niobium Josephson junction with barrier layer made of Cu or Cu0.47Ni0.53 alloy. READ MORE