Sökning: "NATURAL SCIENCES Physics Condensed matter physics Mesoscopic physics"

Visar resultat 1 - 5 av 42 avhandlingar innehållade orden NATURAL SCIENCES Physics Condensed matter physics Mesoscopic physics.

  1. 1. Modeling mesoscopic unconventional superconductors

    Författare :Patric Holmvall; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; phase transitions; Andreev bound states; quasiclassical theory; mesoscopic thin-films; spontaneous symmetry breaking; time-reversal symmetry; Unconventional superconductivity; translational symmetry;

    Sammanfattning : High-temperature superconducting materials are often experimentally realized as thin films that can be patterned into devices operating in the mesoscopic regime. On this length scale, various finite-size and surface effects heavily influence the nature of the superconducting state, and can induce new ground states with spontaneously broken symmetries. LÄS MER

  3. 2. 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

  4. 3. Thermoelectric Effects and Single Electron Sources in Mesoscopic Transport; a Scattering Approach

    Författare :Sara Kheradsoud; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Thermoelectricity; Single electron source; scattering theory; Mesoscopic physics; Fysicumarkivet A:2019:Kheradsoud;

    Sammanfattning : This thesis concerns the theoretical analysis of thermoelectric transport properties and single electron sources in mesoscopic conductors. Wepropose two types of thermoelectric heat engines and analyze them with thehelp of performance quantifiers. LÄS MER

  5. 4. Charge and Energy Noise from On-demand Electron Sources

    Författare :Nastaran Dashti; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Boltzmann-Langevin approach.; fluctua- tions and noise; single-electron source; energy and heat currents; time-dependently driven mesoscopic capaci- tor; charge current; Floquet scattering theory;

    Sammanfattning : On-demand single electron sources (SES) are of key importance for future electronic applications such as metrology or quantum optics with electron. They allow for achieving a controlled, low-fluctuations flow of particles in a coherent mesoscopic conductor. LÄS MER

  7. 5. Transport in mesoscopic superconducting devices

    Författare :Kevin Marc Seja; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; superconductivity; quasiclassical theory; mesoscopic physics; nonequilibrium superconductivity; Andreev bound states; superconducting spintronics;

    Sammanfattning : A field of growing interest within the last few decades is the study of superconductivity in mesoscopic-scale heterostructures. Mesoscopic refers to sizes between the atomic and macroscopic scales. LÄS MER