Essays about: "topologiska isolatorer"
Showing result 1 - 5 of 6 essays containing the words topologiska isolatorer.
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1. Quantum Transport in Topological Insulator Nanowires
University essay from KTH/FysikAbstract : Three-dimensional topological insulators are materials that have a bulk band gap like a traditional insulator, but which hold topologically protected conducting surface states. In this thesis we present a numerical analysis of the surface states of topological insulator nanowires in the tight-binding approximation. READ MORE
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2. Higher Forms and Dimensional Hierarchy in Topological Condensed Matter
University essay from KTH/FysikAbstract : This report discusses higher differential forms with applications in the study of topological phenomena. The integer quantum Hall effect is first discussed, demonstrating a connection between models on a lattice and quantum field theories bridged by a topological invariant, namely the Chern number. READ MORE
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3. Topological properties of flat bands in generalized Kagome lattice materials
University essay from KTH/FysikAbstract : Topological insulators are electronic materials that behave like an ordinary insulator in their bulk but have robust conducting states on their edge. Besides, in some materials the band structure presents completely flat bands, a special feature leading to strong interactions effects. READ MORE
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4. Band structures of topological crystalline insulators
University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysikAbstract : 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. READ MORE
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5. Axion Electrodynamics and Measurable Effects in Topological Insulators
University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Abstract : Topological insulators are materials with their electronic band structure in bulk resembling that of an ordinary insulator, but the surface states are metallic. These surface states are topologically protected, meaning that they are robust against impurities. READ MORE