Fig. 3: Spectral density of states in FeRh along the [100].

The spectral density of states (SDOS) when the net magnetization orientation, \(\hat{m}\) is pointing orthogonal to the different crystal directions in FeRh under three distinct conditions: (i) Δ ≫ λ (ii) Δ ≈ λ and (iii) Δ ≪ λ. The rows of plots represent the three conditions in the crystal grouped according to the net magnetization orientation. In the each horizontal row, we plot the SDOS for each of these conditions respectively from the left to the right for the [100] (a)-(c). The SDOS is plotted in the k_x − k_y-plane at k_z = 0. Each of the three cases illustrates a different point in the Lifshitz transition that occurs in FeRh as the in-plane magnetic field is increased. Furthermore, with each successive increase in magnetic field, the pseudogravitational distortion of the Fermi surface geometry increases.