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Metal nanostructures confined between sp2 hybridized 2D materials and solid supports are attracting attention for their potential application in new nanotechnologies. Model studies under well-defined conditions are valuable for…

The hybrid graphene - hexagonal boron nitride (G-hBN) systems offer new routes in the design of nanoscale electronic devices. Using {\it ab initio} density functional theory calculations we investigate the dynamics of zig-zag nanoribbons a…

材料科学 · 物理学 2016-09-21 George Alexandru Nemnes , Camelia Visan , Dragos Victor Anghel , Andrei Manolescu

Hexagonal boron-nitride (h-BN) provides an ideal substrate for supporting graphene devices to achieve fascinating transport properties, such as Klein tunneling, electron optics and other novel quantum transport phenomena. However,…

介观与纳米尺度物理 · 物理学 2024-02-13 Viet-Anh Tran , Viet-Hung Nguyen , Jean-Christophe Charlier

Hexagonal boron nitride (h-BN) and graphite are structurally similar but with very different properties. Their combination in graphene-based devices meets now a huge research focus, and it becomes particularly important to evaluate the role…

In this Letter, we derive an effective theory of graphene on a hexagonal Boron Nitride (h-BN) substrate. We show that the h-BN substrate generically opens a spectral gap in graphene despite the lattice mismatch. The origin of that gap is…

介观与纳米尺度物理 · 物理学 2012-11-12 M. Kindermann , Bruno Uchoa , D. L. Miller

A periodic spatial modulation, as created by a moir\'e pattern, has been extensively studied with the view to engineer and tune the properties of graphene. Graphene encapsulated by hexagonal boron nitride (hBN) when slightly misaligned with…

介观与纳米尺度物理 · 物理学 2020-01-31 M. Anđelković , S. P. Milovanović , L. Covaci , F. M. Peeters

Light-matter interaction in two-dimension photonic materials allows for confinement and control of free-space radiation on sub-wavelength scales. Most notably, the van der Waals heterostructure obtained by stacking graphene (G) and…

We investigate the impact of the encapsulation with hexagonal boron nitride (h-BN) on the Raman spectrum of few layer black phosphorus. The encapsulation results in a significant reduction of the line width of the Raman modes of black…

介观与纳米尺度物理 · 物理学 2017-11-23 J. M. Urban , M. Baranowski , A. Surrente , D. Wlodarczyk , A. Suchocki , G. Long , Y. Wang , L. Klopotowski , N. Wang , D. K. Maude , P. Plochocka

Lattice deformation is a powerful way to engineer the properties of two-dimensional (2D) materials, making their precise measurement an important challenge for both fundamental science and technological applications. Here, we demonstrate…

材料科学 · 物理学 2026-02-02 Z. Mu , Z. Zhang , J. Fraunié , C. Robert , G. Seine , B. Gil , G. Cassabois , V. Jacques

The recently observed unconventional ferroelectricity in AB bilayer graphene sandwiched by hexagonal Boron Nitride (hBN) presents a new platform to manipulate correlated phases in multilayered van der Waals heterostructures. We present a…

介观与纳米尺度物理 · 物理学 2022-11-30 Ziyan Zhu , Stephen Carr , Qiong Ma , Efthimios Kaxiras

Vertical integration of two-dimensional materials has recently emerged as an exciting method for the design of novel electronic and optoelectronic devices. Using density functional theory, we investigatethe structural and electronic…

材料科学 · 物理学 2015-06-25 Yongqing Cai , Gang Zhang , Yong-Wei Zhang

Graphene plasmons were predicted to possess ultra-strong field confinement and very low damping at the same time, enabling new classes of devices for deep subwavelength metamaterials, single-photon nonlinearities, extraordinarily strong…

Hexagonal boron nitride is an ideal dielectric to form two-dimensional heterostructures due to the fact that it can be exfoliated to be just few atoms thick and its a very low density of defects. By placing graphene nanoribbons on high…

介观与纳米尺度物理 · 物理学 2018-11-28 Yohanes S. Gani , D. S. L. Abergel , Enrico Rossi

We investigate band-gap tuning of bilayer graphene between hexagonal boron nitride sheets, by external electric fields. Using density functional theory, we show that the gap is continuously tunable from 0 to 0.2 eV, and is robust to…

材料科学 · 物理学 2015-05-20 Ashwin Ramasubramaniam , Doron Naveh , ELias Towe

Hexagonal boron nitride (h-BN) is a prominent member in the growing family of two-dimensional materials with potential applications ranging from being an atomically smooth support for other 2D materials to templating growth of molecular…

We study the infrared cyclotron resonance of high mobility monolayer graphene encapsulated in hexagonal boron nitride, and simultaneously observe several narrow resonance lines due to interband Landau level transitions. By holding the…

介观与纳米尺度物理 · 物理学 2018-01-30 B. Jordan Russell , Boyi Zhou , T. Taniguchi , K. Watanabe , Erik A. Henriksen

We calculate theoretically the disorder-limited conductivity of monolayer and bilayer graphene on hexagonal boron nitride (h-BN) substrates, comparing our theoretical results with the recent experimental results. The comparison leads to a…

介观与纳米尺度物理 · 物理学 2011-03-17 S. Das Sarma , E. H. Hwang

The practical implementation of lithium-metal anodes has been hindered by uncontrollable dendrite formation and interfacial instability. This study presents a defect-engineering approach of a chemically stable and electrically insulating…

We find, with the use of first-principles calculations, that a single-atom-thick boron-nitride (BN) sheet exhibits an unusual nonlinear electromechanical effect: it becomes macroscopically polarized when bent out-of-plane. The direction of…

材料科学 · 物理学 2008-10-13 Ivan Naumov , Alexander M. Bratkovsky , V. Ranjan

Quasi-periodic moir\'{e} patterns and their effect on electronic properties of twisted bilayer graphene (TBG) have been intensely studied. At small twist angle $\theta$, due to atomic reconstruction, the moir\'e superlattice morphs into a…