Sökning: "three-terminal device"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden three-terminal device.

  1. 1. Multiple Andreev reflections and nonequilibrium Josephson effect in three-terminal superconducting junctions

    Författare :Jonn A. Lantz; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 2DEG; mesoscopic superconductivity; Josephson junction; Andreev reflection; three-terminal device; SNS;

    Sammanfattning : .... LÄS MER

  2. 2. Modelling of Quantum Transport in Nanostructures

    Författare :Dan Csontos; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; ballistic transport; quantum wire; quantum dot; resonant tunnelling; three-terminal; disorder; Physics; Fysik; Fysicumarkivet A:2002:Csontos; scattering matrix; quantum transport;

    Sammanfattning : In this thesis, theoretical studies of the transport properties of three nanoscale systems: one-dimensional (1D) quantum wires (QWRs), zero-dimensional (0D), laterally confined, double-barrier resonant tunnelling structures (DBRTSs) and three-terminal ballistic junctions (TBJs), have been performed. In the first part of the thesis, an overview of the realization and properties of such systems is given along with a description of modelling tools used in the calculations. LÄS MER

  3. 3. Nanoelectronic Devices Based on Low-Dimensional Semiconductor Structures

    Författare :Daniel Wallin; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; InGaAs InP; GaAs AlGaAs; ballistic transport; quantum transport; low-dimensional structures; two-dimensional electron gas; quantum dot; three terminal ballistic junction; nanowire;

    Sammanfattning : The present thesis reports on results from the fabrication technology development and the corresponding electrical transport measurements of low-dimensional semiconductor structures. The focus of the work has been directed towards two parts: the ballistic transport in nanostructure devices at room temperature, and the development of a charge-sensing technique for quantum dots (QD) in nanowires. LÄS MER

  4. 4. Three-Dimensional Metal-Semiconductor Heterostructures for Device Applications

    Författare :Lars-Erik Wernersson; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Schottky contacts; space-charge spectroscopy; ballistic transport; Coulomb repulsion; electron interference; resonant tunnelling; lateral confinement; heterojunction permeable base transistor; resonant tunnelling diodes; Fysicumarkivet A:1998:Wernersson; Fysik; Physics; resonant tun; epitaxial overgrowth;

    Sammanfattning : Fabrication and characterisation of buried metal contacts in compound semiconductors are demonstrated. The contacts have been investigated due to their usage both as gates in transistors and as active or passive elements in novel devices. LÄS MER

  5. 5. Electromechanical Interactions in Shuttle Systems and Carbon Nanotube Relays

    Författare :Tomas Nord; Chalmers University of Technology; []
    Nyckelord :Coulomb blockade; carbon nanotubes; memory device; nanorelay; single electron tunneling; van der Waals forces; NEMS; shuttle transport; mesoscopic; nanoelectromechanical systems;

    Sammanfattning : In this thesis we theoretically investigate two kinds of nanoscale systems where there is a strong electromechanical coupling, i.e. an intricate relation between the Coulomb forces that can appear in these systems and the displacements of parts of the systems that they cause. LÄS MER