Results 81 to 90 of about 24,312 (276)
, 2015 We investigated theoretically the specific heat of graphene, bilayer graphene and twisted bilayer graphene taking into account the exact phonon dispersion and density of states for each polarization branch.
Balandin, Alexander A. +2 more
core +1 more source
Advanced Functional Materials, EarlyView.From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang +8 more
wiley +1 more source
Exploring the Electrical Properties of Twisted Bilayer Graphene [PDF]
, 2019 Two-dimensional materials exhibit properties unlike anything else seen in conventional substances. Electrons in these materials are confined to move only in the plane.
Greenlee, Byron D. +4 more
core +1 more source
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
Quantum Hall effect in graphene with twisted bilayer stripe defects [PDF]
, 2013 We analyze the quantum Hall effect in single layer graphene with bilayer stripe defects. Such defects are often encountered at steps in the substrate of graphene grown on silicon carbide. We show that AB or AA stacked bilayer stripes result in large Hall
Lofwander, Tomas +2 more
core +4 more sources
Advanced Functional Materials, EarlyView.Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp +7 more
wiley +1 more source
Physical Review Research, 2022 Studies of twisted moiré systems have been mainly focused on two-dimensional (2D) materials such as graphene with Dirac points and transition-metal dichalcogenides so far.
Ming-Rui Li, Ai-Lei He, Hong Yao
doaj +1 more source
Twisted Bilayer Graphene Superlattices
, 2013 23 pages, 5 figures, research ...
Wang, Yanan +16 more
openaire +2 more sources
Spectroscopy of Twisted Bilayer Graphene Correlated Insulators
Physical Review Letters, 2022 We analytically compute the scanning tunneling microscopy (STM) signatures of integer-filled correlated ground states of the magic angle twisted bilayer graphene (TBG) narrow bands. After experimentally validating the strong-coupling approach at $\pm 4$ electrons/moiré unit cell, we consider the spatial features of the STM signal for 14 different many ...
Călugăru, Dumitru +8 more
openaire +3 more sources
Plasmonic Dirac Cone in Twisted Bilayer Graphene [PDF]
Physical Review Letters, 2020 We discuss plasmons of biased twisted bilayer graphene when the Fermi level lies inside the gap. The collective excitations are a network of chiral edge plasmons (CEP) entirely composed of excitations in the topological electronic edge states (EES) that appear at the AB-BA interfaces. The CEP form an hexagonal network with an unique energy scale $ _p=\
Brey, Luis +3 more
openaire +5 more sources