Results 31 to 40 of about 908 (165)

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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Sensitive Sub-THz Photodetection in Twisted Graphene with Broad Spectral Response. [PDF]

Adv Sci (Weinh)
A dual‐gated twisted monolayer–bilayer graphene (TMBG) phototransistor enables ultrabroadband detection spanning visible to sub‐THz regimes. Gate‐tunable moiré bands produce photothermoelectric responses at zero bias and bolometric responses under applied bias.
Wu J, Hou M, Zhu S, Cui J, Mei J, Sun Q, Wang Y, Xie B, Watanabe K, Taniguchi T, Liu Z, Zhang Q, Cai X.   +12 more
europepmc   +2 more sources

2D topological matter from a boundary Green's functions perspective: Faddeev-LeVerrier algorithm implementation

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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Tuning interfacial chemistry with twistronics

Trends in Chemistry, 2022
Moiré superlattices introduce a new degree of freedom, interlayer twist, for tuning the (opto)electronic behavior of materials, through spatially modulated interlayer coupling that produces localized electronic states. We highlight recent explorations into the chemistry of moiré materials and discuss future opportunities for twistronics as a versatile ...
Yun Yu, Madeline Van Winkle, D. Kwabena Bediako   +2 more
openaire   +3 more sources

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, Thompson, J. J. P., Mucha-Kruczynski, M., Fal'ko, Vladimir   +3 more
openaire   +4 more sources

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, Jian Zhang, Sandra Elizabeth Saji, Ary Anggara Wibowo, Sharidya Rahman, Thien N. Truong, Yuerui Lu, Zongyou Yin, Daniel Macdonald, Hieu T. Nguyen   +9 more
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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., Dauphin, A., Lewenstein, M., Rakshit, D., Salamon, T.   +4 more
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Reduction-Induced C─C Cleavage and Site-Specific Hydrogenation of a Highly Strained Bilayer Spironanographene. [PDF]

Angew Chem Int Ed Engl
Single‐crystal X‐ray diffraction analysis revealed a reduction‐induced ring cleavage with subsequent hydrogenation of a bilayer spironanographene upon treatment with alkali metals. Density Functional Theory (DFT) calculations suggested localized spin density on the C‐atom at the central spirocycle upon one‐fold reduction, facilitating a site‐specific ...
Lión-Villar J, Torchon HS, Zhu Y, Wei Z, Fernández-García JM, Fernández I, Petrukhina MA, Martín N.   +7 more
europepmc   +2 more sources

Deep-subwavelength resolution detection of polar magnetization by optical spin meron lattices on hyperbolic metamaterials. [PDF]

Nanophotonics
Abstract Magnetic‐optical Kerr or Faraday effects have been widely used to measure magnetic domain structures by analyzing far‐field polarization properties, with resolution limited by the wavelength scale of light. Here, we propose a methodology to measure the magnetic domain at a deep‐subwavelength scale by investigating the interactions between a ...
Wu J, Wei W, Guo K, Xie X, Yang A, Lei X, Shi P, Zhan Q, Yuan X.   +8 more
europepmc   +2 more sources

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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