Search Results - "Louie, Steven G."
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Topological Phases in Graphene Nanoribbons: Junction States, Spin Centers, and Quantum Spin Chains
Published in Physical review letters (16-08-2017)“…We show that semiconducting graphene nanoribbons (GNRs) of different width, edge, and end termination (synthesizable from molecular precursors with atomic…”
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Physical origin of giant excitonic and magneto-optical responses in two-dimensional ferromagnetic insulators
Published in Nature communications (30-05-2019)“…The recent discovery of magnetism in atomically thin layers of van der Waals crystals has created great opportunities for exploring light–matter interactions…”
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Electronic transport in polycrystalline graphene
Published in Nature materials (01-10-2010)“…Most materials in available macroscopic quantities are polycrystalline. Graphene, a recently discovered two-dimensional form of carbon with strong potential…”
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Theory and computation of hot carriers generated by surface plasmon polaritons in noble metals
Published in Nature communications (02-06-2015)“…Hot carriers (HC) generated by surface plasmon polaritons (SPPs) in noble metals are promising for application in optoelectronics, plasmonics and renewable…”
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Topology Classification using Chiral Symmetry and Spin Correlations in Graphene Nanoribbons
Published in Nano letters (13-01-2021)“…We apply the topological classification theory using chiral symmetry to graphene nanoribbons (GNRs). This approach eliminates the requirement of time-reversal…”
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Discovery of intrinsic ferromagnetism in two-dimensional van der Waals crystals
Published in Nature (London) (08-06-2017)“…Intrinsic long-range ferromagnetic order is observed in few-layer Cr 2 Ge 2 Te 6 crystals, with a transition temperature that can be controlled using small…”
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Defect-Induced Modification of Low-Lying Excitons and Valley Selectivity in Monolayer Transition Metal Dichalcogenides
Published in Physical review letters (16-10-2018)“…We study the effect of point-defect chalcogen vacancies on the optical properties of monolayer transition metal dichalcogenides using ab initio GW and…”
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Temperature-Induced Topological Phase Transitions: Promoted versus Suppressed Nontrivial Topology
Published in Physical review letters (07-12-2016)“…Contrary to previous two-band model studies which find increasing temperature would induce a topological phase transition, we show here through…”
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Inducing metallicity in graphene nanoribbons via zero-mode superlattices
Published in Science (American Association for the Advancement of Science) (25-09-2020)“…The design and fabrication of robust metallic states in graphene nanoribbons (GNRs) are challenging because lateral quantum confinement and many-electron…”
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Environmental Screening Effects in 2D Materials: Renormalization of the Bandgap, Electronic Structure, and Optical Spectra of Few-Layer Black Phosphorus
Published in Nano letters (09-08-2017)“…Few-layer black phosphorus has recently emerged as a promising 2D semiconductor, notable for its widely tunable bandgap, highly anisotropic properties, and…”
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Spin splitting of dopant edge state in magnetic zigzag graphene nanoribbons
Published in Nature (London) (23-12-2021)“…Spin-ordered electronic states in hydrogen-terminated zigzag nanographene give rise to magnetic quantum phenomena 1 , 2 that have sparked renewed interest in…”
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Inversion symmetry and bulk Rashba effect in methylammonium lead iodide perovskite single crystals
Published in Nature communications (08-05-2018)“…Methylammonium lead iodide perovskite (MAPbI 3 ) exhibits long charge carrier lifetimes that are linked to its high efficiency in solar cells. Yet, the…”
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Site-Specific Substitutional Boron Doping of Semiconducting Armchair Graphene Nanoribbons
Published in Journal of the American Chemical Society (22-07-2015)“…A fundamental requirement for the development of advanced electronic device architectures based on graphene nanoribbon (GNR) technology is the ability to…”
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Direct observation of the layer-dependent electronic structure in phosphorene
Published in Nature nanotechnology (01-01-2017)“…Investigation of the electronic structure in few-layer phosphorene reveals optical transitions relevant for technologically important electronic and…”
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Magnetic brightening and control of dark excitons in monolayer WSe2
Published in Nature nanotechnology (01-09-2017)“…Monolayer transition metal dichalcogenide crystals, as direct-gap materials with strong light–matter interactions, have attracted much recent attention…”
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Tunable excitons in bilayer graphene
Published in Science (American Association for the Advancement of Science) (17-11-2017)“…Excitons, the bound states of an electron and a hole in a solid material, play a key role in the optical properties of insulators and semiconductors. Here, we…”
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Energy Gaps and Stark Effect in Boron Nitride Nanoribbons
Published in Nano letters (01-08-2008)“…A first-principles investigation of the electronic properties of boron nitride nanoribbons (BNNRs) having either armchair or zigzag shaped edges passivated by…”
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Giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor
Published in Nature materials (01-12-2014)“…Transition metal dichalcogenides are attracting widespread attention for their appealing optoelectronic properties. Using a combination of numerical and…”
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Imaging moiré flat bands in three-dimensional reconstructed WSe2/WS2 superlattices
Published in Nature materials (01-07-2021)“…Moiré superlattices in transition metal dichalcogenide (TMD) heterostructures can host novel correlated quantum phenomena due to the interplay of narrow moiré…”
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Recent Advances in Two-Dimensional Materials beyond Graphene
Published in ACS nano (22-12-2015)“…The isolation of graphene in 2004 from graphite was a defining moment for the “birth” of a field: two-dimensional (2D) materials. In recent years, there has…”
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