Fig. 4: Quantum transport in a Rashba spin-orbit coupled ferromagnet.

a Numerically calculated anisotropic magnetoresistance (AMR) corresponding to a spin orbit coupling of λR = 0.5, a chemical potential of μ = 0.2, and Δ = 0.9 (red), Δ = 0.5 (blue) and Δ = 0.01 (green) where in each case the magnetic order parameter is oriented along the \(\hat{y}\)-direction in the model. b The distorted non-degenerate Fermi surface corresponding to the C2 symmetric AMR of Δ = 0.9 c The Fermi surface when Δ = 0.5 shows the appearance of a second concentric Fermi surface at the Fermi level that is indicative of the onset of a Lifshitz transition resulting in the appearance of harmonics beyond that of C2. d The Fermi surface corresponding to Δ = 0.01 where the Fermi level crosses both spin bands resulting in concentric spin-degenerate Fermi surfaces and the recovery of an inverted C2-symmetric AMR, as seen in FeRh.