Sökning: "valence electrons"
Visar resultat 1 - 5 av 67 avhandlingar innehållade orden valence electrons.
1. Photoemission From Si(100)/Na,K Metallization, Surface Photovoltage and Quantum Well States
Sammanfattning : Si(100) covered by Na and K has been studied with photoemission using low photon energies (hw.... LÄS MER
2. Strongly Interacting Electrons in One and Two Dimensions
Sammanfattning : In this thesis I present a theoretical study of three differentstrongly correlated systems: Luttinger liquids, spin-1 chains andthe two-dimensional spin-1/2 Heisenberg model.For every sub-field of our research I summarize the background andprovide further details to the work presented in the appendedpapers. LÄS MER
3. Synchrotron radiation spectroscopy of molecular dynamics beyond the valence shell
Sammanfattning : This thesis presents experimental results on molecular spectroscopy of gas phase molecules using synchrotron radiation. It deals mainly with dynamical processes following resonant excitation of electrons from core and inner-valence shells of the following systems H2O, H2, SF6 and CD4. LÄS MER
4. Cohesive and Spectroscopic properties of the Lanthanides within the Hubbard I Approximation
Sammanfattning : We describe the rare-earth elements using the Hubbard I approximation. We show that the theory reproduces the cohesive properties, like the volume and bulk modulus, and we find an excellent agreement between theory and experiment for the (inverse) photo emission spectra of the valence band. LÄS MER
5. Correlated materials : models and methods
Sammanfattning : This thesis encompass a series of studies on methods and models for electron systems with local interactions, relevant for correlated materials. The first study focus on the canonical model for local correlation, the Hubbard model. LÄS MER
