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Showing 1 to 5 of 5 for “"valley polarization"”.

  1. Ultrafast Charge and Energy transfer Dynamics in Organic-Transition Metal Dichalcogenides Heterostructures

    See, Soo TeckUniversity of Cambridge2024

    … the ultrafast energy, charge transfer and spin-valley physics of Organic-TMD Heterostructures, namely Pentacene/MoTe2 and Pentacene/WSe2 were examined. It was found that excitation at the electronic gap of MoTe2 leads to a Type II to type I band alignment cross over in Pentacene/MoTe2 …

    cambridge Repository record

  2. Hofstadter Physics and Composite Fermionic Phase in Moiré Systems

    Ding, ShuhanMassachusetts Institute of Technology2024

    … the rich fractal pattern and the impact of valley polarization induced by the magnetic field. Building on this framework, we delve into the concept of composite fermions, particularly in the context of the fractional quantum Hall effect (FQHE). We extend Jain’s composite fermion theory and …

    mit Repository record

  3. Exploring valleytronics in 2D transition metal dichalcogenides

    Modtland, Brian JosephMassachusetts Institute of Technology2018

    … 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 bands, and shows promise in electro-optical devices or as an information token for logic applications. In …

    mit Repository record

  4. Stoner magnetism and Berry phase in quantum materials

    Dong, ZhiyuMassachusetts Institute of Technology2023

    … interesting for magnetic phases with spin and valley polarization originating from Stoner instability, such as those seen in moiré graphene and other narrow-band systems. Despite recent advances in the field, these questions remain largely unexplored, and this thesis aims to address this gap in …

    mit Repository record

  5. Control of Exciton Photon Coupling in Nano-structures

    Liu, XiaozeThe Graduate School and University Center of The City University of New York2001

    … emission in the strong coupling regime. Valley polarization has also been discussed in this MoS<sub>2</sub> microcavity for the possible applications in spin switches and logic gates. </p> <p>The direct dipole-dipole type excitonic interactions have also been studied in inorganic-organic …

    cuny-grad Repository record