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Low-energy effective Hamiltonian involving spin-orbit coupling in silicene and two-dimensional germanium and tin
Starting from symmetry considerations and the tight-binding method in combination with first-principles calculation, we systematically derive the low-energy effective Hamiltonian involving spin-orbit
Three-band tight-binding model for monolayers of group-VIB transition metal dichalcogenides
We present a three-band tight-binding (TB) model for describing the low-energy physics in monolayers of group-VIB transition metal dichalcogenides MX2 (M = Mo, W; X = S, Se, Te). As the conduction-
Evidence of silicene in honeycomb structures of silicon on Ag(111).
The finding and evolution of several monolayer superstructures of silicon on Ag(111), depending on the coverage and temperature, are reported, which elucidate how silicene forms onAg(111) surface and provides methods to synthesize high-quality and large-scale silicenes.
Berry-phase effect in anomalous thermoelectric transport.
A finite-temperature formula for the orbital magnetization is derived, which enables to provide an explicit expression for the off-diagonal thermoelectric conductivity, to establish the Mott relation between the anomalous Nernst and Hall effects, and to reaffirm the Onsager relations between reciprocal thermoelectedric conductivities.
Quantum anomalous Hall effect in graphene from Rashba and exchange effects
We investigate the possibility of realizing quantum anomalous Hall effect in graphene. We show that a bulk energy gap can be opened in the presence of both Rashba spin-orbit coupling and an exchange
Quantum spin Hall effect in silicene and two-dimensional germanium.
It is demonstrated that silicene with topologically nontrivial electronic structures can realize the quantum spin Hall effect (QSHE) by exploiting adiabatic continuity and the direct calculation of the Z(2) topological invariant.
Epitaxial growth of single-domain graphene on hexagonal boron nitride.
The epitaxial growth of single-domain graphene on h-BN by a plasma-assisted deposition method and the synthesis method is potentially applicable on other flat surfaces could open new ways of graphene band engineering through epitaxy on different substrates.
First principles calculation of anomalous Hall conductivity in ferromagnetic bcc Fe.
The theory identifies an intrinsic contribution to the anomalous Hall conductivity and relates it to the k-space Berry phase of occupied Bloch states, which has the same origin as the well-known magneto-optical effect.
Robust quantum anomalous Hall effect in graphene-based van der Waals heterostructures
The quantum anomalous Hall (QAH) effect is a novel quantum state characterized by edge states which are topologically protected from backscattering and hold great potential for applications in