Sökning: "superconducting junctions"

Visar resultat 1 - 5 av 70 avhandlingar innehållade orden superconducting junctions.

  1. 1. Dissipative Processes in Superconducting Diffusive Tunnel Junctions

    Författare :Andrey Vasenko; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Josephson effect; Andreev bound states; nonequilibrium superconductivity; superconducting junctions; transport processes; tunneling; diffusive superconductors;

    Sammanfattning : A central subject of this thesis is the dissipative current transport in superconducting tunnel junctions with diffusive electrodes. Tunnel current transport in superconducting junctions is a classical topic of interest and research. LÄS MER

  3. 2. Antenna Integrated Superconducting Mixers

    Författare :Hans Ekström; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tapered slotline antenna; mixer; double dipole antenna; superconducting; hot electron; receiver; Niobium; bolometer; trilayer junction; edge junction; Niobium Nitride; SIS;

    Sammanfattning : This thesis investigates the prospects of some different superconducting mixers integrated with planar antennas for the millimeter and submillimeter regime. Two kinds of Superconductor/Insulator/Superconductor (SIS) tunnel junctions for use in mixers have been fabricated; Nb/PbBi edge junctions and Nb trilayer junctions. LÄS MER

  4. 3. AC Josephson effect in superconducting d-wave junctions

    Författare :Tomas Löfwander; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dc and ac Josephson effect; superconductivity; Bogoliuboov-de Gennes equation; Andreev reflection; superconducting junctions; d-wave superconductivity; high-Tc superconductivity;

    Sammanfattning : .... LÄS MER

  5. 4. Studies on hybrid superconducting junctions

    Författare :Cecilia Holmqvist; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Critical Current; Single-Electron Box; Attractive Correlations; Josephson Junction; Negative Charging Energy; Quasiclassical Superconductivity; Josephson Current;

    Sammanfattning : In the field of nanoelectronics, one seeks to combine quantum mechanical effects with macroscopic entities such as currents in order to find new ways of storing and manipulating information. One possibility to accomplish this is to use the quantum correlations found in superconductors. LÄS MER

  7. 5. Small superconducting junctions or numerical experiments on multiple Andreev reflections

    Författare :Göran Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bogoliubov-de Gennes equation; resonant tunneling; superconducting junctions; superconductivity; Josephson effect; voltage biased; BCS theory;

    Sammanfattning : .... LÄS MER