Comment on “Proper and improper chiral magnetic interactions”

In a recent paper by dos Santos Dias et al. [Phys. Rev. B 103, L140408 (2021)], critique of earlier works analyzing low-energy spin Hamiltonians is put forth. To be precise, it the large noncollinear contributions to Dzyaloshinskii-Moriya interaction (DMI) that main concern this Comment, we clarify microscopic mechanisms for DMI can found in magnets. Furthermore, outline complementary nature different parametrizations Hamiltonian, with strengths and weaknesses both approaches. Specifically, stress physical insight interpretation DMI, when decomposed electron densities currents.