Essays about: "josephson junction"

Showing result 1 - 5 of 6 essays containing the words josephson junction.

  1. 1. Quasicrystal nanowires in SNS-junctions

    University essay from Uppsala universitet/Materialteori

    Author : Anna Sandberg; [2022]
    Keywords : quasicrystal; Fibonacci quasicrystal; superconductivity; SNS-junction; Josephson junction; proximity effect; Josephson current; Bogoliubov-de Gennes method;

    Abstract : Quasicrystals are systems that are ordered but not periodic. They do however still have long-range order and well-defined diffraction peaks. This leads to interesting properties, like critical states which are neither extended nor localized, and to topological invariants and edge states. READ MORE

  3. 2. Characterization of InAs-Al semiconductor-superconductor hybrid devices

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Markus Aspegren; [2020]
    Keywords : quantum dot; superconductivity; quantum transport; josephson junction; spectroscopy; yu-shiba-rusinov; hybrid devices; sub-gap states; quantum computer; majorana bound state; bogoliubov quasiparticle; Physics and Astronomy;

    Abstract : In this thesis we study charge and spin transport through InAs-Al nanowire superconductor-semiconductor hybrid devices. We focus on assessing the quality of the InAs-Al contact interface when using a weak HCl acid to wet-etch the nanowire surface prior to metal evaporation. READ MORE

  4. 3. Supercurrents in a Topological Josephson Junction with a Magnetic Quantum Dot

    University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Author : Adam Szewczyk; [2018]
    Keywords : Majorana; Andreev; Keldysh; Josephson; density of states; quantum transport; topological superconductor; magnet;

    Abstract : The purpose of this master thesis is to investigate theoretically the influence of a nanomagnet on the Josephson effect displayed by phase biased point contacts consisting of topological superconductors. The device is modeled using the nonequilibrium Keldysh Green’s function technique. First, the Gor’kov Green’s functions are calculated. READ MORE

  5. 4. Simulation of Majorana Bound States in Multi-Band Josephson Junction Nanowires

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Georg Wolgast; [2017]
    Keywords : Physics and Astronomy;

    Abstract : Majorana bound states can be created at the ends of semiconducting nanowires using a combination of proximity-induced superconductivity, spin-orbit coupling and a magnetic eld. By adding a Josephson junction to this nanowire, four Majorana bound states can exist at the same time in the system. READ MORE

  6. 5. Monte Carlo Simulation Study of 1D Josephson Junction Arrays

    University essay from KTH/Teoretisk fysik

    Author : Oliver Nikolic; [2016]
    Keywords : ;

    Abstract : .... READ MORE