Sökning: "Elisabet Edvardsson"

Hittade 3 uppsatser innehållade orden Elisabet Edvardsson.

1. 1. Band structures of topological crystalline insulators

   Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik

   Författare :Elisabet Edvardsson; [2018]
   Nyckelord :Topological insulator; Band structure; Block tridiagonal matrix;

   Sammanfattning : Topological insulators and topological crystalline insulators are materials that have a bulk band structure that is gapped, but that also have toplogically protected non-gapped surface states. This implies that the bulk is insulating, but that the material can conduct electricity on some of its surfaces. LÄS MER

3. 2. Modular forms for triangle groups

   Kandidat-uppsats, Karlstads universitet/Institutionen för matematik och datavetenskap (from 2013)

   Författare :Elisabet Edvardsson; [2017]
   Nyckelord :modular form; triangle group; Hauptmodul; algebra of modular forms; the Ramanujan equations;

   Sammanfattning : Modular forms are important in different areas of mathematics and theoretical physics. The theory is well known for the modular group PSL(2,Z), but is also of interest for other Fuchsian groups. In this thesis we will be interested in triangle groups with a cusp. LÄS MER

4. 3. Quasicrystals : Classification, diffraction and surface studies

   Kandidat-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik

   Författare :Elisabet Edvardsson; [2015]
   Nyckelord :quasicrystal; cohomology of groups; reduced lattice; diffraction; X-ray standing waves;

   Sammanfattning : Quasicrystal is the term used for a solid that possesses an essentially discrete diffraction pattern without having translational symmetry. Compared to periodic crystals, this difference in structure gives quasicrystals new properties that make them interesting to study -- both from a mathematical and from a physical point of view. LÄS MER