b Tight binding model of the CT lattice on 2D Cr8Se12 with the three types of hopping parameters denoted by t1, t1’, and t2. c Tight binding simulated energy bands showing qualitative agreement with the DFT band structure. d, e Side (d) and top (e) views of the charge density ...
The phase is the lowest energy state that satisfies the symmetry constraints of the Kagome lattice. The CFP breaks the time reversal symmetry T and gives rise to the quantum anomalous Hall response. 2. Tight-binding model As illustrated in Fig. 1a, each unit cell of Kagome lattice contains ...
The layered system LaRu3Si271,72,73,74,75is another good example of a material hosting both a kagome lattice and superconductivity. The structure of LaRu3Si2contains distorted kagome layers of Ru sandwiched between layers of La and layers of Si having a honeycomb structure (see Fig.1e and h...
Excitonic properties in the Kagome lattice system, which is produced by quantum wires on semiconductor surfaces, are investigated by using the exact diagonalization of a tight binding model. It is shown that due to the existence of flat bands the binding energy of exciton becomes remarkably large ...
求助，如题！
Kagome lattice structure formed by Mn (blue) atoms in the a-b plane, sandwiched between Gd (black) and Sn (red) atoms. b The sketch illustrates the tight-binding (TB) model on a kagome lattice with nearest-neighbor (NN) in-plane hopping. c Schematic 2D band structure of kagome lattice...
9 | Tight-binding model on the stacked triangular lattice with 2 × 2 × 2 chiral CDW order. a, The unit cell of the model consists of 8 lattice sites (black) on two layers, each harbouring a single electronic orbital. The model is defined by the hoppings as indicated, ...
lattice rather than a perfect lattice. A tight-binding model, describing the distorted Kagome lattice, reveals the origination of the flat band. In chapter five, we summarize the previous studies and we also show the prospect about the studies in the future. ...
A tight-binding model is used to explain the various band structures in different CKLs. The coexistence of flat and Dirac bands around the Fermi level implies that CKL structures maybe can serve as superconductors. In addition, electronic properties of the thinnest CKL slabs, only consisting of ...
In this work, we first study these tilted Dirac cones using a tight-binding model, revealing how they can be engineered into the different types. We then demonstrate conical diffraction in a photonic lattice realization of the Lieb-kagome lattice using split-step beam propagation simulations, ...