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Showing 1 to 4 of 4 for “"Valleytronics"”.
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Exploring valleytronics in 2D transition metal dichalcogenides
Monolayer transition metal dichalcogenides (TMDs) exhibit distinct electrical and optical properties according to the relative occupation of each of two valleys in their dispersion relation. The resulting valley degree of freedom is robust, linked to a large spin-orbit splitting between valence …
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Layer-by-Layer Single-crystal Two-dimensional Material Growth by Geometric Confinement
… applications such as spintronics, valleytronics, and optoelectronics. This thesis introduces a confined-growth technique that can overcome the aforementioned hurdles simultaneously by introducing a geometric SiO₂ mask that has growth selectivity from the underlying substrate. As …
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Device Physics of Two-Dimensional Crystalline Materials
… the possibility of 2D-crystal based valleytronics, nanoscale lasing, and multiple photo-excited carrier collection. Subsequently, we demonstrate a scalable way to synthesize TMD monolayers, as well as a method to achieve epitaxial growth within an atomic plane, leading to the …
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Coherent light-matter interactions in monolayer transition-metal dichalcogenides
… information in next generation devices, called valleytronics. However, these valleys are normally locked in the same energy level, which limits their potential use for applications. This dissertation presents the optical methods to split their energy levels by means of coherent light-matter …