Sökning: "Magnon"
Visar resultat 1 - 5 av 13 avhandlingar innehållade ordet Magnon.
1. Resonant Inelastic X-ray Scattering Studies on Quasi-Two-Dimensional Superconducting Materials
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
2. Interacting Dirac Matter
Sammanfattning : The discovery of graphene in 2004 has led to a surge of activities focused on the theoretical and experimental studies of materials hosting linearly dispersive quasiparticles during the last decade. Rapid expansion in the list of materials having similar properties to graphene has led to the emergence of a new class of materials known as the Dirac materials. LÄS MER
3. Magnetotransport Measurements of Ni Thin Films
Sammanfattning : This thesis presents transverse magnetoresistance (MR) and Hall resistivity measurements of nickel thin films at temperatures between 280 and 455 K and pressures up to 6 GPa. An experimental system was developed for conducting precise magnetotransport measurements using the current reversal and van der Pauw techniques in combination with a 10 T superconducting magnet. LÄS MER
4. Role of charge and spin fluctuations and their interplay in solids : A Green’s function approach
Sammanfattning : Due to the large number of electrons, solid state physics boils down to many-body approximations in which only selected types of collective excitations are taken into account, guided by the emergent properties of the material under study. In this thesis, the collective excitations of primary interest are electronic charge and spin fluctuations(plasmons and magnons) and nuclear charge fluctuations (phonons). LÄS MER
5. From 2d-van der Waals magnets to superconductor hybrid devices
Sammanfattning : This thesis focuses on two distinct topics in different lines of research within mesoscopic physics. The first topic is related to magnons in 2d-van der Waals magnets. LÄS MER