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Showing 1 to 14 of 14 for “"flat bands"”.
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Quantum simulation with an optical kagome lattice
… studying the kagome lattice and the associated flat band. Despite a copious amount of theoretical effort to elucidate the physics of the kagome lattice, experimental kagome physics is still in its infancy. In the case of ultracold atoms, this is mainly due to considerable technical challenges …
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Engineering topology and correlation in epitaxial thin film kagome metals
… arrangement produces both topological Dirac bands and correlated flat bands. In search of its material realizations, kagome metals, a class of intermetallics containing the two-dimensional kagome networks of transition metal atoms, have shown promise in faithfully manifesting the original …
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Bosonic Quantum Hall States from Rapidly Rotating Bose-Einstein Condensates
… enabled by $\textit{in situ}$ imaging. In the flat bands created through rotation, interaction energy dominates kinetic energy facilitating the study of the interaction driven dynamics of Landau gauge quantum Hall states of bosons. These states crystallize into a periodic array of superfluid …
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The Interplay of Magnetism and Topology in Topological Insulators
… in-plane magnetisation as a means to engineer flat-bands in the energy dispersion relation of topologically non-trivial materials. When considering antiferromagnetic interlayer coupling, we uncover an interesting dependence of the electronic dispersion and the local density of states on the …
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Assessment of colloidal self-assembly for photonic crystal
… characteristic near to the band edges or near to flat bands of the photonic band diagram is suited for superprism and light harvesting applications. Potentially, the unique characteristics of colloidal photonic crystal could be capitalized in a low cost micro-fabrication model. Finally, the study …
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Synthetic Topological Quantum Matter in Nanostructured 2D Materials for Quantum Information Processing
… We obtain the band structure with characteristic flat bands and a Dirac cone. At charge neutrality, turning on electron-electron interactions results in a metallic to antiferromagnetic phase transition, for Hubbard interaction strength considerably smaller than in other graphene multilayers. We …
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Magneto-thermal Transport and Machine Learning-assisted Investigation of Magnetic Materials
… well understood. Recently, the concept of the flat band, with a vanishing dispersion, has gained importance. Especially in electronic systems, many theories and experiments have proven that some structures such as kagome or honeycomb lattices hosts such flat bands with non-trivial topology. …
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Light scattering studies of phonon anomalies and superconductivity in A15 compounds
… to interband electronic transitions between the flat bands emanating from the r 12 level. A simple model of the interaction quantitatively reproduces the temperature dependence of the Eg phonon linewidth. Raman measurements on p-irradiated V3Si reveal a disorder induced one-phonon density of …
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Quantum Materials based on the Kagome Lattice
… Hove singularities at the zone edge M, and the flat band across the entire Brillouin zone. Once properly combined with other perturbations, these electronic singularities of the kagome lattice represent a rich potential to realize diverse emergent quantum phenomena at the intersection of …
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Graphene-Based Nanodevices in the Superconducting and Strongly Correlated Regimes
… other near the “magic angle,” θ ≈ 1.1°, nearly flat bands develop, featuring superconductivity and correlated insulating states. I begin by showing that local electrostatic control over the different electronic phases of magic-angle twisted bilayer graphene (MATBG) enables the creation of …
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Engineering Topological Quantum Matter with Patterned Light
… transitions to the creation of nearly flat bands, which can allow the realization of strongly correlated phenomena in Floquet systems. Finally, we investigate the Floqut vortex states created by shining light carrying non-zero orbital angular momentum on a 2D semiconductor. We …
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Formulating design rules to predict 2D materials and heterostructures for next-generation electronics
The Holy Grail of materials science is to understand how atoms in the periodic table get arranged into materials with specific properties. Knowledge of the design rules and material descriptors for a given property will reduce reliance on serendipity in materials design and help us answer questions …
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Coupling of deformation and electronic properties in two-dimensional materials
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Computation of van der Waals effects in layered materials
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms