UTe₂ has drawn considerable interest for its unconventional superconducting phase(s). Evidence suggests spin-triplet superconductivity, with magnetic fluctuations responsible for the pairing. A symmetry-based argument of how anisotropic magnetic interactions prefer particular symmetries of the pairing gap function [1] is provided. In this work, based on density-functional theory calculations and model calculations, we discuss possible forms of magnetic interactions in UTe₂.

[1] T. Shishidou, H.G. Suh, P.M.R. Brydon, M. Weinert, and D.F. Agterberg, (2020), arXiv:2008.04250 [cond-mat.supr-con].