Sökning: "Superconductor"

Visar resultat 16 - 20 av 118 avhandlingar innehållade ordet Superconductor.

  1. 16. Experimental Verification of Superconductor Digital Circuits

    Författare :Henrik Engseth; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; heatload; MCM; high frequency test; RSFQ; Superconductivity;

    Sammanfattning : Superconducting digital technology based on Rapid Single Flux Quantum logic (RSFQ) offers more than 50 times advantages in speed and $100$ times less power consumption than today's mainstream semiconductor electronics. This technology is attractive for many applications and in particular for Digital Signal Processing (DSP) for multi-user detection in a 3G wireless systems being developed at Chalmers University. LÄS MER

  3. 17. Unraveling the cuprate superconductor phase diagram : Intrinsic tunneling spectroscopy and electrical doping

    Författare :Thorsten Jacobs; Vladimir Krasnov; Dominik Munzar; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Superconductivity; cuprates; intrinsic tunneling spectroscopy; Josephson junctions; mesa structures; micro nanoscale fabrication; electrical doping; pseudogap; Bi-2212; Bi-2201; fysik; Physics;

    Sammanfattning : High-temperature superconductors belong to the group of strongly correlated materials. In these compounds, complex repulsive electron interactions and a large number of degrees of freedom lead to a rich variety of states of matter. LÄS MER

  4. 18. Mesoscopic phenomena in hybrid superconductor/ferromagnet structures

    Författare :Taras Golod; Vladimir Krasnov; Alexandre Bouzdine; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Condensed matter physics; Kondenserade materiens fysik; fysik; Physics;

    Sammanfattning : This thesis explores peculiar effects of mesoscopic structures revealed at low temperatures. Three particular systems are studied experimentally: Ferromagnetic thin films made of diluted Pt1-xNix alloy, hybrid nanoscale Nb-Pt1-xNix-Nb Josephson junctions, and planar niobium Josephson junction with barrier layer made of Cu or Cu0.47Ni0.53 alloy. LÄS MER

  5. 19. Fabrication and characterization of graphene-superconductor devices

    Författare :Niclas Lindvall; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Graphene; Atomic force microscopy; Aharonov-Bohm effect; Weak localization; Bolometer; Chemical vapor deposition; Synthesis; Mechanical cleaning;

    Sammanfattning : Graphene is the first single-atom-thick two-dimensional material and exhibits a large set of interesting properties. This thesis consists of two parts. The first regards the growth of large-area graphene using chemical vapor deposition (CVD). LÄS MER

  7. 20. Quantum Transport in Superconductor-Semiconductor Nanowire Hybrid Devices

    Författare :Chunlin Yu; NanoLund: Centre for Nanoscience; []
    Nyckelord :Nanowire; InSb; Transport; Quantum dot; Majorana bound states; Andreev bound states; the Kondo effect; Superconductivity; Fysicumarkivet A:2018:Yu;

    Sammanfattning : In this thesis, we study quantum transport properties of superconductor-semiconductor nanowire hybrid devices. We mainly focus on the quantum transport in InSb nanowire Josephson quantum dot devices, i.e. quantum dots coupled to two pieces of superconductors. LÄS MER