Sökning: "Disordered Superconductors"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Disordered Superconductors.

1. 1. Superinductance and fluctuating two-level systems: Loss and noise in disordered and non-disordered superconducting quantum devices

   Författare :David Niepce; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Disordered Superconductors; Nanowire; Superinductor; Quantum information; Superconducting circuits; Superinductance; TLS; Two-level Systems;

   Sammanfattning : In this thesis, we first demonstrate that a disordered superconductor with high kinetic inductance can realise a microwave low-loss, non-dissipative circuit element with impedance greater than the quantum resistance. This element, known as a superinductor, can suppress the fluctuations of charge in a quantum circuit. LÄS MER

3. 2. Local structure in disordered materials studied by neutron scattering and RMC modelling

   Författare :Liselotte Karlsson; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; Local structure; neutron scattering; RMC modelling; metallic glasses; high Tc; superconductors; fast ion conductors; Kärnfysik; Nuclear physics; Kärnfysik; Physics Of Matter; materiefysik;

   Sammanfattning : Different disordered materials are becoming more and more important in various technological applications. There is a need to improve our detailed understanding of the local structure of such materials and how the atomic structure is related to macroscopic physical properties. LÄS MER

4. 3. Nanowire Superinductors

   Författare :David Niepce; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Disordered Superconductors; Superinductance; Superinductor; Resonator; Nanowire; TLS;

   Sammanfattning : In this thesis, we demonstrate that a disordered superconductor with a high kinetic inductance can realize a low microwave loss, non-dissipative circuit element with an impedance greater than the quantum resistance (Rq = h/4e^2 = 6.5kΩ). LÄS MER

5. 4. Studies of Topological Superconductors via Defects

   Författare :Oladunjoye Awoga; Annica Black-Schaffer; Pascal Simon; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

   Sammanfattning : Defects from impurities, edges, junctions or domain walls have local detrimental effects on the superconducting state. Defects are also important in topological superconductors, and useful in studying the properties of the superconducting order parameter. LÄS MER

7. 5. Phase transitions and phase frustration in multicomponent superconductors

   Författare :Daniel Weston; Egor Babaev; Mats Wallin; Ilya Eremin; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics;

   Sammanfattning : Multicomponent superconductors described by several complex matter fields have properties radically different from those of their single-component counterparts. Examples include partially ordered phases and spontaneous breaking of time-reversal symmetry due to frustration between Josephson-coupled components. LÄS MER