Moiré physics in twisted van der Waals heterostructures of 2D materials

Behura, Sanjay K.; Miranda, Alexis O.; Nayak, Sasmita; Johnson, Kayleigh; Das, Priyanka; Pradhan, Nihar

doi:10.1007/s42247-021-00270-x

Cited by 29 publications

(17 citation statements)

References 80 publications

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“…Additionally, applying Moiré physics with twisted bilayer graphene (or other vdW heterostructures) may provide further interesting results. Interlayer twisting provides an additional degree of freedom for bilayer systems and can create strong correlated quantum states, thereby affecting photonic behaviors such as SPPs [ 40 , 156 , 157 ]. Investigating the Moire physics in twisted vdW 2D layered materials is relatively new, and the effects on plasmonic properties have not yet been thoroughly explored, with potential to inspire next generation nanophotonic devices.…”

Section: Discussionmentioning

confidence: 99%

Plasmonic sensors based on graphene and graphene hybrid materials

et al. 2022

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The past decade has witnessed a rapid growth of graphene plasmonics and their applications in different fields. Compared with conventional plasmonic materials, graphene enables highly confined plasmons with much longer lifetimes. Moreover, graphene plasmons work in an extended wavelength range, i.e., mid-infrared and terahertz regime, overlapping with the fingerprints of most organic and biomolecules, and have broadened their applications towards plasmonic biological and chemical sensors. In this review, we discuss intrinsic plasmonic properties of graphene and strategies both for tuning graphene plasmons as well as achieving higher performance by integrating graphene with plasmonic nanostructures. Next, we survey applications of graphene and graphene-hybrid materials in biosensors, chemical sensors, optical sensors, and sensors in other fields. Lastly, we conclude this review by providing a brief outlook and challenges of the field. Through this review, we aim to provide an overall picture of graphene plasmonic sensing and to suggest future trends of development of graphene plasmonics.

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Section: Discussionmentioning

confidence: 99%

Plasmonic sensors based on graphene and graphene hybrid materials

et al. 2022

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“…In another aspect, twistronics is a recent and potential breakthrough field when applying heterostructure devices based on 2D materials. ,− ,− Flat bands in MATBG, TDBG, and twisted-TMDs can, in general, be realized in the presence of symmetry-breaking effects such as a large out-of-plane magnetic field that induces conductivity variations via the formation of Landau levels or a Hofstadter butterfly energy spectrum. ,− , Such a phase transition between a topological insulator to the superconducting state can be realized in MATBG and TDBG with a slight interlayer rotational misalignment of 1.1°. Interestingly, such a small mismatch in periodicity creates Moiré patterns that usually extend over 10 nm and confine electron wavefunctions within the Moiré unit cell, resulting in narrow energy flat bands .…”

Section: Summary and Perspectivesmentioning

confidence: 99%

2D Heterostructures for Ubiquitous Electronics and Optoelectronics: Principles, Opportunities, and Challenges

et al. 2022

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A grand family of two-dimensional (2D) materials and their heterostructures have been discovered through the extensive experimental and theoretical efforts of chemists, material scientists, physicists, and technologists. These pioneering works contribute to realizing the fundamental platforms to explore and analyze new physical/chemical properties and technological phenomena at the micro–nano–pico scales. Engineering 2D van der Waals (vdW) materials and their heterostructures via chemical and physical methods with a suitable choice of stacking order, thickness, and interlayer interactions enable exotic carrier dynamics, showing potential in high-frequency electronics, broadband optoelectronics, low-power neuromorphic computing, and ubiquitous electronics. This comprehensive review addresses recent advances in terms of representative 2D materials, the general fabrication methods, and characterization techniques and the vital role of the physical parameters affecting the quality of 2D heterostructures. The main emphasis is on 2D heterostructures and 3D-bulk (3D) hybrid systems exhibiting intrinsic quantum mechanical responses in the optical, valley, and topological states. Finally, we discuss the universality of 2D heterostructures with representative applications and trends for future electronics and optoelectronics (FEO) under the challenges and opportunities from physical, nanotechnological, and material synthesis perspectives.

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“…[152][153][154][155][156][157][158][159][160][161][162] In general, twisted transition metal dichalcogenides (TMDs) can be produced when symmetry-breaking processes such as large out-of-plane magnetization and temporal conductivity changes due to the creation of Landau levels or the Hofstadter butterfly energy spectra occur. [152][153][154][155][156][157][158][159][160][161][162][163][164] In twisted doubled bilayer graphene (TDBG) and magic angle twisted bilayer graphene (MATBG), a phase change from an insulator to a superconducting material is possible with a small stacking rotational mismatch of 1.1°. Surprisingly, such a small periodicity mismatch causes moiré patterns, which often restrict electron wavefunctions to the moiré unit cell of size 10 nm, resulting in flat bands with a constrained amount of energy.…”

Section: Twistronics In Photodetectorsmentioning

confidence: 99%

Nanostructures/Graphene/Silicon Junction‐Based High‐Performance Photodetection Systems: Progress, Challenges, and Future Trends

Iqbal

Anwar

Malik

et al. 2023

Adv Materials Inter

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Graphene, due to its exceptional optoelectronic characteristics, high charge carrier mobility, wide absorption band, strong light‐matter interactions, and its adjustable nature, has attracted a lot of interest. In light of this, an attempt was made to successfully deposit graphene on a silicon substrate. This results in the formation of a Schottky junction, which could extend the operation window of the graphene/silicon hybrid device to the near‐infrared (NIR) region. Furthermore, since photodetectors built with Van der Waal heterostructures successfully extend the lifespan of dynamic charge carriers with improved the transportation range and speed of charge separation for effective photodetection, the technical development of optoelectronic devices has been greatly accelerated. Recent developments in graphene‐silicon junction‐based devices, their photodetection effectiveness, and active factors that can be used in a variety of applications are outlined, including optical synaptic systems, optical spectrometers, plasmonic devices, optical waveguides, and ultrafast photodetectors. Moreover, the shortcomings of the present optoelectronic devices are also concisely reviewed, along with the viable solutions offered by this new device and its application in next‐generation devices.

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Moiré physics in twisted van der Waals heterostructures of 2D materials

Cited by 29 publications

References 80 publications

Plasmonic sensors based on graphene and graphene hybrid materials

Plasmonic sensors based on graphene and graphene hybrid materials

2D Heterostructures for Ubiquitous Electronics and Optoelectronics: Principles, Opportunities, and Challenges

Nanostructures/Graphene/Silicon Junction‐Based High‐Performance Photodetection Systems: Progress, Challenges, and Future Trends

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