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 semimetals"”.
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Quantum oscillations in Dirac semimetals
Dirac semimetals have recently gained interest due to their unique experimental signatures many of which can be explained by the topologically non-trivial band structure in these materials. Among the many candidates, the tellurides NbTe₄, TaPtTe₅ and TaNiTe₅ appear to provide a promising platform …
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Implications of Vorticity and Disorder on Quantum Transport in Topological Semimetals
… vortical and converse vortical effects in Weyl semimetals that break inversion symmetry. Using semiclassical and quantum kinetic frameworks, we analyze how Berry curvature and orbital magnetic moments generate charge and current responses in the presence of rotation and vorticity. The interplay …
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Genetic algorithm gradient ascent (GAGA) optimization of compact symmetry-breaking photonic crystals
… presents 1D photonic crystals composed of Weyl/Dirac semimetal and dielectric layers, whose structures are optimized to maximize the nonreciprocity of infrared radiation absorptance/emittance in planar and compact designs. Two different mechanisms to enable nonreciprocal infrared …
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Examining Topological Insulators and Topological Semimetals Using First Principles Calculations
… surface states of topological insulators and semimetals. Topological materials have protected qualities which are not removed by weak perturbations. The manifestations of these qualities in topological insulators are spin-momentum-locked surface states, and in Weyl and Dirac semimetals they …
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Angle-resolved photoemission studies of topological thin films and superconducting heterostructures
… (Bi{1-x}Sbx)2Te3/Nb, and the Type-II Dirac semimetal candidate NiTe2. A major component of this thesis research was the engineering of clean, nearly intrinsic TI/SC systems to probe the mechanism of proximity-induced pairing in these systems. Interfacing a TI with a simple isotropic …