Fig. 1: Bulk topology of ML Nb3TeCl7. | npj Quantum Materials

Fig. 1: Bulk topology of ML Nb3TeCl7.

From: Orbital degree of freedom induced multiple sets of second-order topological states in two-dimensional breathing Kagome crystals

Fig. 1

a, b TB bulk band structures of the conventional Kagome lattice and breathing Kagome lattice, respectively. c Atomic structure of ML Nb3TeCl7. The Nb atoms, Te atoms and Cl atoms are represented by gray, yellow and red spheres, respectively. d The unit cell of ML Nb3TeCl7 is indicated by the black rhombus. The Nb atoms form a breathing Kagome lattice indicated by gray bonds. The small triangle (triangle A) and big triangle (triangle B) are indicated by red and blue colors, respectively. e Calculated bulk band structure of ML Nb3TeCl7. The Fermi energy is shifted to zero Energy. f Calculated \(\left[ {p_1\left( {k_2} \right),p_2\left( {k_1} \right)} \right]\) for Gap #1. Inset: schematic illustration of the position of the Wannier center \(\left( {p_1,p_2} \right) = \left( {\frac{1}{3},\frac{2}{3}} \right)\). g Calculated \(\left[ {p_1\left( {k_2} \right),p_2\left( {k_1} \right)} \right]\) for Gap #5. Inset: schematic illustration of the position of the Wannier center \(\left( {p_1,p_2} \right) = \left( {\frac{2}{3},\frac{1}{3}} \right)\).

Back to article page