Sökning: "ac Josephson effect"
Hittade 5 avhandlingar innehållade orden ac Josephson effect.
1. AC Josephson effect in superconducting d-wave junctions
Sammanfattning : .... LÄS MER
2. Multiple Andreev Reflection - a Microscopic Theory of ac Josephson Effect in Mesoscopic Junctions
Sammanfattning : The mechanism of multiple Andreev reflection (MAR) is a microscopic theory for electron transport in voltage biased superconducting junctions, i.e. the ac Josephson effect. In this thesis we propose a new approach for calculating the dc current from MAR. LÄS MER
3. Magnesium Diboride (MgB2) and Ca-doped YBa2Cu3O7-? : Thin Films and Devices. Fabrication and Characterization
Sammanfattning : Magnesium diboride (MgB2) is a superconductor with an exceptionally high transition temperature, Tc, of 39 K. This work describes deposition of high quality and superconducting films of MgB2 for electronic applications. Experiments on Ca-doped YBa2Cu3O7-? films and fabrication of bicrystal Josephson junctions are also described. LÄS MER
4. Dissipative Processes in Superconducting Diffusive Tunnel Junctions
Sammanfattning : A central subject of this thesis is the dissipative current transport in superconducting tunnel junctions with diffusive electrodes. Tunnel current transport in superconducting junctions is a classical topic of interest and research. LÄS MER
5. Current measurement by real-time counting of single charges
Sammanfattning : The first real-time observation of time correlated single-electron tunnelling is reported in this thesis. This is a direct detection of charge discreteness in an electrical current.When a current, I, flows through a chain of metallic islands, connected by small tunnel junctions, a lattice of charges is formed due to the Coulomb repulsion. LÄS MER