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Fabrication of devices made by isolated Graphene or Graphene-like single layers (such as h-BN) has opened up possibility of examining highly correlated states of electron systems in parts of their phase diagram that is impossible to access…

强关联电子 · 物理学 2015-12-08 Bahman Roostaei

The interaction between graphene and copper (111) surface have been investigated using the molecular dynamics simulations. We have shown that it is possible to fit Lennard-Jones potential leading to the correct values of the binding energy…

介观与纳米尺度物理 · 物理学 2016-11-03 A. V. Sidorenkov , S. V. Kolesnikov , A. M. Saletsky

The adsorption of an alkali-metal submonolayer on graphene occupying every third hexagon of the honeycomb lattice in a commensurate $(\sqrt{3}\times\sqrt{3})R30^\circ$ arrangement induces an energy gap in the spectrum of graphene. To…

材料科学 · 物理学 2009-01-27 M. Farjam , H. Rafii-Tabar

Graphene, the atomically-thin honeycomb carbon lattice, is a highly conducting 2D material whose exposed electronic structure offers an ideal platform for sensing. Its biocompatible, flexible, and chemically inert nature associated to the…

Graphene is the extreme material for molecular sensory and hydrogen storage applications because of its two-dimensional geometry and unique structure-property relationship. In this Letter, hydrogenation of graphene is discussed in the…

材料科学 · 物理学 2010-02-10 Zhiping Xu , Kun Xue

Twisted double bilayer graphene (tDBLG) is a moir\'e material that has recently generated significant interest because of the observation of correlated phases near the magic angle. We carry out atomistic Hartree theory calculations to study…

Graphene is a novel two-dimensional material with fascinating electrodynamic properties like the ability to support collective electron oscillations (plasmons) accompanied by tight confinement of electromagnetic fields. Our goal is to…

介观与纳米尺度物理 · 物理学 2013-03-15 Marinko Jablan

Graphene has a multitude of striking properties that make it an exceedingly attractive material for various applications, many of which will emerge over the next decade. However, one of the most promising applications lie in exploiting its…

A dynamically-modulated ring system with frequency as a synthetic dimension has been shown to be a powerful platform to do quantum simulation and explore novel optical phenomena. Here we propose synthetic honeycomb lattice in a…

光学 · 物理学 2021-10-05 Danying Yu , Guangzhen Li , Meng Xiao , Da-Wei Wang , Yong Wan , Luqi Yuan , Xianfeng Chen

The properties of polycrystalline materials are often dominated by the size of their grains and by the atomic structure of their grain boundaries. These effects should be especially pronounced in 2D materials, where even a line defect can…

Graphene, defined as a single atomic plane of graphite, is a semimetal with small overlap between the valence and the conduction bands. The stacking of graphene up to several atomic layers can produce diverse physical properties, depending…

材料科学 · 物理学 2019-02-08 Jiliang Zhang , Guangcun Shan

We have revealed the decisive role of grain-boundary-induced strain fields in electron scattering in polycrystalline graphene. To this end, we have formulated the model based on Boltzmann transport theory which properly takes into account…

材料科学 · 物理学 2022-05-24 S. E. Krasavin , V. A. Osipov

Graphene, a single atomic layer of graphitic carbon, has attracted intense attention due to its extraordinary properties that make it a suitable material for a wide range of technological applications. Large-area graphene films, which are…

介观与纳米尺度物理 · 物理学 2015-02-18 Oleg V. Yazyev , Yong P. Chen

The electronic properties of a graphene sheet with attached hydrogen atoms is studied using a modified Falicov-Kimball model on the honeycomb lattice. It is shown that in the ground state this system separates into two phases: fully…

介观与纳米尺度物理 · 物理学 2012-11-30 A. L. Rakhmanov , A. V. Rozhkov , A. O. Sboychakov , Franco Nori

We devise a new technique to prove two-dimensional crystallization results in the square lattice for finite particle systems. We apply this strategy to energy minimizers of configurational energies featuring two-body short-ranged particle…

介观与纳米尺度物理 · 物理学 2023-08-22 Leonard Kreutz , Manuel Friedrich

Graphene is a 2D material with appealing electronic and optoelectronic properties. It is a zero-bandgap material with valence and conduction bands meeting in a single point (Dirac point) in the momentum space. Its conductivity can be…

应用物理 · 物理学 2020-03-10 V. Sorianello , G. Contestabile , M. Romagnoli

Single-layer carbon, or graphene, demonstrates amazing transport properties, such as the minimum conductivity near $\frac{4e^2}{h}$ independent of shapes and mobility of samples. This indicates there exist some unusual effects due to…

介观与纳米尺度物理 · 物理学 2007-05-23 Shi-Jie Xiong , Ye Xiong

Motivated by recent developments in twisted bilayer graphene moir\'e superlattices, we investigate the effects of electron-electron interactions in a honeycomb lattice with an applied periodic potential using a finite-temperature…

介观与纳米尺度物理 · 物理学 2020-05-28 Robert E. Throckmorton , S. Das Sarma

The advent of graphene created a revolution in materials science. Because of this there is a renewed interest in other carbon-based structures. Graphene is the ultimate (just one atom thick) membrane. It has been proposed that graphene can…

介观与纳米尺度物理 · 物理学 2017-01-24 Vinicius Splugues , Pedro Alves da Silva Autreto , Douglas S. Galvao

Graphene has been widely studied for various applications due to its outstanding electrical and mechanical properties. However, its potential in thermoelectric applications has been limited by a low Seebeck coefficient and high thermal…

材料科学 · 物理学 2024-04-04 Laura Caputo , Viet-Hung Nguyen , Jean-Christophe Charlier