Sökning: "high temperature superconductivity"

Visar resultat 21 - 25 av 62 avhandlingar innehållade orden high temperature superconductivity.

1. 21. Thermodynamic characterization of superconducting and magnetic materials using nanocalorimetry

   Författare :Donato Campanini; Andreas Rydh; Christoph Meingast; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanocalorimetry; Superconductivity; Magnetism; MEMS; Specific heat; Thermodynamics; Physics; fysik;

   Sammanfattning : Measurement of specific heat is a powerful technique for the investigation of novel materials. Superconducting and magnetic systems, in particular, can be thoroughly characterized by studying their electronic contribution to the specific heat. LÄS MER

3. 22. Nanoscale YBa2Cu3O7-δ devices -Searching for a subdominant order parameter using a single electron transistor

   Författare :David Gustafsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; grain boundary; Josephson junctions; YBCO; single electron transistors; high temperature superconductivity;

   Sammanfattning : The microscopic origin of High critical Temperature Superconductivity (HTS) is still an open issue in condensed matter physics. It is believed that by exlporing the quasiparticle energy spectrum one can learn about the mechanism promoting the superconducting state. LÄS MER

4. 23. Resonant Inelastic X-ray Scattering Studies on Quasi-Two-Dimensional Superconducting Materials

   Författare :Deepak John Mukkattukavil; Jan-Erik Rubensson; Marcus Agåker; Yasmine Sassa; Conny Såthe; Balasubramanian Thiagarajan; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Resonant inelastic x-ray scattering; Superconductivity; Crystal; Magnon; Phonon; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

   Sammanfattning : Unconventional superconductivity is one of the many fascinating research areas of condensed matter physics. Understanding the superconducting pairing mechanism and its connection with other competing states remains unclear. LÄS MER

5. 24. Deviations from the London model in superconductors

   Författare :Emma Campillo; Synkrotronljusfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Superconductivity; Neutron scattering; SANS; vortex lattice; condensed matter physics; Fysicumarkivet A:2022:Campillo;

   Sammanfattning : Using Small-Angle Neutron Scattering (SANS) we have studied the flux line lattices of the first heavy-fermion superconductor to be discovered, CeCu2Si2, the well-known high-temperature superconductor YBa2Cu3O7, along with Ca-doped variants of this compound, and several topological superconductor candidates that have attracted a lot of attention in the last few years, such as PbTaSe2, Au2Pb and β-Bi2Pd.Unconventional superconductors, with pairing mechanisms and properties that are not accounted for within BCS theory, are a subject of continuing interest. LÄS MER

7. 25. Quantum Materials Probed by Light and Electron Spectroscopy

   Författare :Karin von Arx; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; RIXS; superconductivity; electron- phonon coupling; quantum materials; spin-orbit coupling; ARPES;

   Sammanfattning : As new technologies rely heavily on materials’ properties, the quest for novel tunable electronic and magnetic materials occupies a large part of nowadays research efforts. Most promising materials are quantum materials, which exhibit a wide range of exotic electronic and magnetic phenomena and often show a great sensitivity to external perturbations such as temperature, pressure or chemical doping. LÄS MER