Sökning: "Superconducting weak links"

Hittade 4 avhandlingar innehållade orden Superconducting weak links.

  1. 1. Mesoscopic phenomena in the electromechanics of suspended nanowires

    Författare :Gustav Sonne; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanoelectromechanical systems; Ground-state cooling; Superconducting weak links; Carbon nanotubes; Non-linear resonance;

    Sammanfattning : Over the last two decades nanotechnology has been a very active field of scientific research, both from fundamental perspectives as well as for applications in technology and consumer goods. In this thesis, theoretical work on quantum mechanical effects on charge transport in nanoelectromechanical systems is presented. LÄS MER

  2. 2. Quantum mechanical effects on charge transport in two mesoscopic systems

    Författare :Gustav Sonne; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanoelectromechanical systems; NEMS; carbon nanotubes; carbon peapods; excess current; superconducting weak links; suspended carbon nanotubes; non-linear resonances;

    Sammanfattning : Carbon nanotubes are one of the most promising building blocks for the developing field of nanoelectromechanics. Due to their unique electronic and mechanical properties, these all-carbon systems have been suggested for a range of applications where one wishes to utilse the coupling between mechanical and electronic degrees of freedom on the nanometer length scale. LÄS MER

  3. 3. Cooling of a Suspended Nanowire by an ac Josephson current

    Författare :Milton Eduardo Peña-Aza; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanoelectromechanical systems; nanowire; metallic carbon nanotubes; quantum ground state cooling of nanomechanical resonators; superconduting weak links; nanoelectromechanical Josephson junction;

    Sammanfattning : Nanoelectromechanical systems have been used for the exploration of the quantum limit of mechanical motion. There is hope that the quest for the quantum regime of these systems will shed light on fundamental questions in physics and lead to new quantum technologies. LÄS MER

  4. 4. Noise and electrical properties of YBCO nanostructures

    Författare :Edoardo Trabaldo; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SQUID; nanowire.; noise; YBCO; HTS;

    Sammanfattning : This thesis work deals with the investigation of noise properties in cuprate High critical Temperature Superconductor (HTS) YBCO nanoscale devices. Here the aim is to get a better understanding of nanoscale fluctuations in the normal state of HTS from which superconductivity evolves. LÄS MER