Results 51 to 60 of about 10,146 (239)
, 2013 We consider the electronic structure of a slightly twisted graphene bilayer and show the coexistence of van Hove singularities (VHSs) and superlattice Dirac points in a continuum approximation.
Chu, Zhao-Dong, He, Lin, He, Wen-Yu
core +1 more source
Graphene Bilayer with a Twist: Electronic Structure [PDF]
Physical Review Letters, 2007 Electronic properties of bilayer and multilayer graphene have generally been interpreted in terms of AB or Bernal stacking. However, it is known that many types of stacking defects can occur in natural and synthetic graphite; rotation of the top layer is often seen in scanning tunneling microscopy (STM) studies of graphite.
Santos, J. M. B. Lopes dos +2 more
openaire +3 more sources
Breakdown of the interlayer coherence in twisted bilayer graphene
, 2012 Coherent motion of the electrons in the Bloch states is one of the fundamental concepts of the charge conduction in solid state physics. In layered materials, however, such a condition often breaks down for the interlayer conduction, when the interlayer ...
Dong Chul Kim +12 more
core +1 more source
Strain-induced Evolution of Electronic Band Structures in a Twisted Graphene Bilayer
, 2013 Here we study the evolution of local electronic properties of a twisted graphene bilayer induced by a strain and a high curvature. The strain and curvature strongly affect the local band structures of the twisted graphene bilayer; the energy difference ...
A Altland +57 more
core +1 more source
, 2012 We examine the quantum Hall effect in bilayer graphene grown on Cu substrates by chemical vapor deposition. Spatially resolved Raman spectroscopy suggests a mixture of Bernal (A-B) stacked and rotationally faulted (twisted) domains.
Fallahazad, Babak +5 more
core +1 more source
, 2014 Here we show that twisted graphene trilayer made by misoriented stacking a graphene monolayer on top of a Bernal graphene bilayer can exhibit rich and tailored electronic properties.
He, Lin, Qiao, Jia-Bin
core +1 more source
Photonic crystals for nano-light in moir\'e graphene superlattices [PDF]
, 2018 Graphene is an atomically thin plasmonic medium that supports highly confined plasmon polaritons, or nano-light, with very low loss. Electronic properties of graphene can be drastically altered when it is laid upon another graphene layer, resulting in a ...
Basov, D. N. +12 more
core +3 more sources
Stacking‐Engineered Magnonic Topology and Transport in Honeycomb Homobilayers
Advanced Functional Materials, EarlyView.ABSTRACT Topological magnons have emerged as a promising platform for dissipationless bosonic transport. However, a straightforward and effective strategy to engineer such topological states in real materials has yet to be fully realized. Here, a general scheme for controlling magnonic topological states via stacking engineering in van der Waals ...
Xiaoran Feng +6 more
wiley +1 more source
Optical-phonon resonances with saddle-point excitons in twisted-bilayer graphene [PDF]
, 2014 Twisted-bilayer graphene (tBLG) exhibits van Hove singularities in the density of states that can be tuned by changing the twisting angle $\theta$. A $\theta$-defined tBLG has been produced and characterized with optical reflectivity and resonance Raman ...
Ado Jorio +32 more
core +2 more sources
Optical conductivity of twisted bilayer graphene
Physical Review B, 2013 We calculate the finite-frequency conductivity of bilayer graphene with a relative twist between the layers. The low frequency response at zero doping shows a flat conductivity with value twice that of the monolayer case and at higher frequency a strong absorption peak occurs. For finite doping, the low frequency flat absorption is modified into a peak
Tabert, Calvin J., Nicol, Elisabeth J.
openaire +3 more sources