Sökning: "two-dimensional electron systems"
Visar resultat 1 - 5 av 52 avhandlingar innehållade orden two-dimensional electron systems.
1. Transmission Electron Microscopy of 2D Materials : Structure and Surface Properties
Sammanfattning : During recent years, new types of materials have been discovered with unique properties. One family of such materials are two-dimensional materials, which include graphene and MXene. These materials are stronger, more flexible, and have higher conductivity than other materials. As such they are highly interesting for new applications, e. LÄS MER
2. Charged Excitations and Phase Transitions in Two Dimensional Electron Systems
Sammanfattning : .... LÄS MER
3. Electron Transport in Low Dimensional Systems
Sammanfattning : This thesis consists of experimental studies of transport properties in high mobility two dimensional electron gases (2DEGs). Two material systems are used, an AlGaAs/GaAs heterojunction and a GaInAs/InP quantum well. LÄS MER
4. Microscopic Theory of Exciton Dynamics in Two-Dimensional Materials
Sammanfattning : Transition Metal Dichalcogenides (TMDs) present a giant leap forward towards the realization of nanometer-sized quantum devices. As a direct consequence of their truly two-dimensional character, TMDs exhibit a strong Coulomb-interaction, leading to the formation of stable electron-hole pairs, so-called excitons. LÄS MER
5. Collective Electron Dynamics in Mesoscopic Systems
Sammanfattning : This work is devoted to a theoretical investigation of collective electron dynamics in low dimensional materials and mesoscopic structures. A common feature of these studies is the focus on the properties of the low energy dynamics of conduction electrons. One class of studied materials is the high-Tc superconductor Nd2CuO4 and related compounds. LÄS MER