Sökning: "YBCO nanowire"

Hittade 4 avhandlingar innehållade orden YBCO nanowire.

  1. 1. Unconventional Properties of YBCO Thin Films and GB Josephson Devices for Novel Applications

    Författare :Jesper Johansson; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; London penetration depth; Coulomb blockade; c-axis transport; YBCO nanowire; SQUID dynamics; unconventional current-phase relation; high-temperature superconductivity; grain-boundary; Single Electron Transistor; intrinsic inductance; tilt-tilt Josephson junctions; YBCO; current injection SQUIDs; nano-lithography; Josephson Junctions;

    Sammanfattning : .... LÄS MER

  2. 2. Development of high-Tc SQUID magnetometers for on-scalp MEG

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Minshu Xie; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanowire junctions; on-scalp MEG; Bicrystal grain boundary; magnetoencephalography; YBCO; magnetometers; high-Tc SQUIDs;

    Sammanfattning : This thesis describes the development of high critical temperature superconducting quantum interference device (high-Tc SQUID) magnetometers based on bicrystal grain boundary and nanowire junctions for the potential use in on-scalp magnetoencephalography (MEG), which is a new generation MEG technique with reduced sensor-to-subject standoff distances.MEG is a method of mapping neural dynamics in the human brain by recording the magnetic fields produced by neural currents. LÄS MER

  3. 3. Approaching the depairing critical current in superconducting YBa2Cu3O7−x nanowires

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Shahid Nawaz; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; YBCO; Superconductivity; HTS; Nanowires; NanoSQUIDs;

    Sammanfattning : The microscopic origin of High critical Temperature Superconductivity isstill an open issue in condensed matter physics. In these complex oxideselectrons self-organize in ways qualitatively different from those of conventionalmetals and insulators. LÄS MER

  4. 4. YBCO nanowires to study nanoscale ordering in High-Tc Superconductors

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Riccardo Arpaia; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; nanoscale ordering; nanoSQUIDs; nanowires; High-Tc superconductors; ultrathin films; oxygen doping; nanowire-based single photon detectors;

    Sammanfattning : We present the realization of YBa2Cu3O7-δ (YBCO) nanowires for both basic physics studies, which could help to elucidate the microscopic mechanisms of High critical Temperature Superconductors (HTS), and for novel applications.The first part of the thesis describes an improved nanopatterning procedure, based on e-beam lithography in combination with an amorphous carbon mask and a very gentle Ar+ ion etching. LÄS MER