Fig. 8
From: Phase transitions, Dirac and Weyl semimetal states in Mn1−xGexBi2Te4
Theoretically calculated changes in the dispersion dependencies of the bulk states in the \(\varGamma \!Z\) direction of the BZ for \(\textrm{Mn}_{1-x} \textrm{Ge}_x \textrm{Bi}_2 \textrm{Te}_4\) with \(x = 0.5\) for AFM - (a1–a7) and FM - (b1–b7) phases with variations of compression and tension of the crystal lattice parameter c relative to the initial one, taken as \(c = 1\). Changes in the contributions of the Te \(p_z\) and Bi \(p_z\) states are represented in red and blue, respectively. The insets (c1–c7) show detail in the region of the Weyl point for the FM phase (the intersection of the states in the \(\varGamma \!Z\) direction).
