Fig. 4: 2D electronic band structure and Van Hove singularities of the tail-to-tail domain wall. | npj Computational Materials

Fig. 4: 2D electronic band structure and Van Hove singularities of the tail-to-tail domain wall.

From: Giant thermoelectric power factor in charged ferroelectric domain walls of GeTe with Van Hove singularities

Fig. 4

Energy of the top valence band for 39° (11\(\bar{1}\)) tail-to-tail domain wall (in eV) in the interface Brillouin zone. Black arrows represent the directions of the in-plane reciprocal lattice vectors. The blue arrow corresponds to the projection of the polarization change onto the domain wall plane. Van Hove singularities are indicated by blue points.

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