Surface chemistry controls the location of WSe2nucleation on a stepped sapphire substrate. Preferential nucleation at either the top or bottom step edge can be used to minimize mirror twin domains and produce unidirectional WSe2monolayers. Haoyue Zhu ...
to the c-axis increases from 14.4° of the bulk, unrelaxed structure to 27.1° for the relaxed structure as illustrated in Table1. This surface-enhanced octahedral tilt consists of a rigid rotation of the anion cage which can be specifically divided into the out-of-plane tilt (versus c-axi...
including the cleaning and annealing of metal catalyst, the diffusion of carbon, covering of carbon on the surface, formation of graphene, and so on. These information provided by SE would be useful to control the graphene quality and in situ SE technique was proved to be an effective quality...
Then it was shown later that more general 2kF Fermi surface (FS) nesting processes could stabilize either a spiral [15] or an oscillating [16] 2kF spin density wave (SDW). Although SDWs stabilized by the FS nesting mechanism are known since more than half a century in 3D metals such ...
•ETinDonor-Bridge-Acceptorcomplexes:McConnell’sformulaforthetunnelingmatrixelements.Theproblem:•Electronic-nuclearcouplingatthemolecularbridgeandthebreakdownoftheCondonapproximation.Themodelsystem:•Generalizedspin-bosonHamiltoniansfordissipativethrough-bridgetunneling.Results:•Theweakcouplinglimit:Langevin-...
Negativity can also be computed by the formula [78] 𝒩(𝜌𝐴𝐵)=12(∥𝜌𝑇𝑘∥−1), (8) in which the trace norm of 𝜌𝑇𝑘 is equal to the sum of the absolute values of its eigenvalues [79], that is ∥𝜌𝑇𝑘∥=∑𝑖|𝜇𝑖|, (9) where the ...
Two-dimensional materials possess an atomic thickness and their intralayer atoms are combined by covalent bonds in nature, whereas the interlayers are coupled by weak van der Waals forces, thus allowing the crystal to readily cleave along the layer’s surface [2,3,4,5]. A variety of 2DMs ...
Surface energy density (energy/area)Jm–2MT–2 TemperatureoC or θMoLoToθ Temperature gradient(change in temperaturedistance)(change in temperaturedistance)oCm–1or θm–1MoL–1Toθ Thermal capacity (mass × specific heat)Jθ–1ML2T–2θ–1 ...
Why Is the Density of States Formula Applicable in a 1D Quantum Wire? I have seen, in several places, derivations of a formula for the current flow in a 1d quantum wire connected to electron reservoirs at its respective terminals. All of these derivations at some point invoke the formula fo...
Low field Shubnikov-de Haas (SdH) measurements (H<14 T) have been performed to investigate the Fermi surface (FS) of the low dimensional conductor η-Mo_4O_11. This compound shows two CDW transitions at ≈ 100K and 30K, but remains metallic down to 50mK. When H is perpendicular to th...