Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Dirac materials"”.
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Growth, Structural and Electrical Characterization of Topological Dirac Materials
… instead of the charge. A new class of exotic materials called topological insulators are predicted to exhibit efficient spintronic applications. These materials can conduct spin polarised current on their surface while remaining completely insulting from the inside. Moreover, doping …
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Manipulation and analysis of topological properties in hybrid Dirac materials [Manipolazione ed analisi delle proprietà topologiche dei materiali di Dirac]
… sulla manipolazione controllata dei materiali di Dirac. In particolare, vengono studiati due tipi di sistemi: i semimetalli a linea nodale ingegnerizzati tramite campi Floquet e le eterostrutture superconduttive a base di grafene. Nella prima parte della tesi, studiamo gli stati di interfaccia che …
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Terahertz Spectroscopy of Topological Insulators and other 2-Dimensional Materials
… There has been a rising interest in so-called Dirac materials, characterized by a linear dispersion relation, giving rise to exotic physical phenomena such as high carrier velocities ~ 106 m/s and dissipationless charge transport. In this thesis, we have studied two classes of Dirac materials - …
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Boundaries, disorder and noise in quantum-coherent systems
… noise. First, we consider surface states in Dirac materials. We show that these systems can host ballistically propagating modes that are immune, to a large extent, to disorder at boundaries. Furthermore, in contrast to the conventional Tamm-Shockley states, Dirac surface states exist for …
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Properties of the α-T3 Model
… for the model. The quasiparticles of Dirac materials behave like massless Dirac fermions, afford- ing opportunities for testing high-energy physics phenomena, such as Klein tunnelling. We calculate Klein tunnelling for the α-T3 lattice, and examine transmission across sharp potential …