Results 31 to 40 of about 947 (177)
Twistronics for photons: opinion
Optical Materials Express, 2021 A pair of stacked two-dimensional heterostructures suitably rotated with respect to each other support exotic electronic properties with interesting implications for nanoelectronics and quantum technologies. A similar paradigm can be extended to light, offering a great promise for emerging low-dimensional nanophotonic heterostructures.
Guangwei Hu, Cheng-Wei Qiu, Andrea Alù
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Hexagonal boron nitride: optical properties in the deep ultraviolet
Comptes Rendus. Physique, 2021 We review the recent advance in the understanding of the optoelectronic properties of hexagonal boron nitride (hBN) in the deep ultraviolet. The comparison between bulk hBN and monolayer hBN highlights some of their major differences such the bandgap ...
Cassabois, Guillaume +6 more
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Twistronics: a turning point in 2D quantum materials [PDF]
Electronic Structure, 2021 Abstract Moiré superlattices—periodic orbital overlaps and lattice-reconstruction between sites of high atomic registry in vertically-stacked 2D layered materials—are quantum-active interfaces where non-trivial quantum phases on novel phenomena can emerge from geometric arrangements of 2D materials, which are not intrinsic to the parent ...
Zachariah Hennighausen, Swastik Kar
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Quantum anomalous Hall phase in synthetic bilayers via twistronics without a twist [PDF]
, 2020 We recently proposed quantum simulators of "twistronic-like" physics based on ultracold atoms and syntheticdimensions [Phys. Rev. Lett. 125, 030504 (2020)]. Conceptually, the scheme is based on the idea that aphysical monolayer optical lattice of desired
Chhajlany, R. +4 more
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Electronic Raman Scattering in Twistronic Few-Layer Graphene [PDF]
Physical Review Letters, 2020 We study electronic contribution to the Raman scattering signals of two-, three- and four-layer graphene with layers at one of the interfaces twisted by a small angle with respect to each other. We find that the Raman spectra of these systems feature two peaks produced by van Hove singularities in moir minibands of twistronic graphene, one related to
Garcia-Ruiz, Aitor +3 more
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Twist-driven wide freedom of indirect interlayer exciton emission in MoS2/WS2 heterobilayers
Cell Reports Physical Science, 2021 Summary: Theoretical and first-principal studies involving twisted two-dimensional (2D) heterobilayer transition metal dichalcogenides (TMDs) predict interlayer exciton (ILE) emission energy amplitudes (the energy difference between the lowest and the ...
Mike Tebyetekerwa +9 more
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SciPost Physics, 2022 Since the breakthrough of twistronics a plethora of topological phenomena in correlated systems has appeared. These devices can be typically analyzed in terms of lattice models using Green's function techniques. In this work we introduce a general method
Miguel Alvarado, Alfredo Levy Yeyati
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Fundamentals and Recent Advances in Epitaxial Graphene on SiC [PDF]
, 2022 This book is a compilation of recent studies by recognized experts in the field of epitaxial graphene working towards a deep comprehension of growth mechanisms, property engineering, and device processing.
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Incommensurate heterostructures in momentum space [PDF]
, 2017 To make the investigation of electronic structure of incommensurate heterostructures computationally tractable, effective alternatives to Bloch theory must be developed. In [Multiscale Model. Simul., 15(2017), pp.
Carr, S. +3 more
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Bulk valley transport and Berry curvature spreading at the edge of flat bands
, 2020 2D materials based superlattices have emerged as a promising platform to modulate band structure and its symmetries. In particular, moir\'e periodicity in twisted graphene systems produces flat Chern bands. The recent observation of anomalous Hall effect
Adak, Pratap Chandra +8 more
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