Search for dissertations about: "one dimensional Josephson junction"

Showing result 1 - 5 of 16 swedish dissertations containing the words one dimensional Josephson junction.

  2. 1. Quantum effects in nanoscale Josephson junction circuits

    Author : Silvia Corlevi; David B. Haviland; Jukka Pekola; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Josephson junctions; Josephson junction arrays; electromagnetic environment; Cooper pair transistor; parity effects; Physics; Fysik;

    Abstract : This thesis presents the results of an experimental study on single-charge effects in nanoscale Josephson junctions and Cooper pair transistors (CPTs). In nanoscale Josephson junctions the charging energy EC becomes significant at sub-Kelvin temperatures and single-charge effects, such as the Coulomb blockade of Cooper pair tunneling, influence the transport properties. READ MORE

  4. 2. Interactions and Interference in Mesoscopic Systems: Josephson Current through Quantum Dots and Josephson Junction Arrays

    Author : Klas Engström; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; density functional theory; quantum dots; Josephson effect; Andreev reflection; mesoscopic superconductivity; Josephson junction array; coulomb interactions; Bogoliubov-de Gennes equation; quantum phase transition;

    Abstract : The focus of the thesis is on the interplay between interactions and interference effects in mesoscopic systems. More specifically, the two main projects included deal with Coulomb interactions and Josephson effect in two superconductor-normal metal systems: (i) a Josephson junction array and (ii) a superconductor-normal metal-superconductor (SNS) system in which the normal part is a quantum dot. READ MORE

  5. 3. Nonlinear dynamics of Josephson Junction Chains and Superconducting Resonators

    Author : Adem Ergül; David B. Haviland; Per Delsing; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Superconductivity; Josephson Junction; SQUID; Superconducting Resonators;

    Abstract : This thesis presents the results of the experimental studies on two kindof Superconducting circuits: one-dimensional Josephson junction chains andsuperconducting coplanar waveguide (CPW) resonators. One-dimensionalJosephson junction chains are constructed by connecting many Superconducting quantum interference devices (SQUIDs) in series. READ MORE

  6. 4. Theoretical and experimental studies of the flux-flow type Josephson oscillator

    Author : Yongming Zhang; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nb NbOx PbBi tunnel junction; resistive loading; effect of self-field; resonant fluxion motion; velocity-matching step; chaotic phenomena; SIS detector; optimum bias feed; uniform bias feed; open-circuit boundary condition; perturbed sine-Gordon qeuation; reactive ion beam oxidation; effect of damping; one dimensional Josephson junction; flux-flow type Josephson oscillator;

    Abstract : .... READ MORE

  7. 5. Topology in One-Dimensional Quantum Systems

    Author : Christian Spånslätt; Eddy Ardonne; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : States of matter which are described by concepts in topology are of great interest in the community of condensed matter physics. Both from a pure theoretical perspective, where many non-intuitive and mathematically rich results can be found from seemingly simple models, and also since recent experimental developments allows for explicit construction of devices where the underlying topology has observable consequences. READ MORE