5<i>d</i>-mediated indirect exchange and effective spin Hamiltonians in Ce triangular-lattice delafossites

Anisotropic intersite exchange interactions in frustrated rare-earth magnets are difficult to assess both theoretically and experimentally. Here, we propose an ab initio force-theorem framework combining the quasi-atomic Hubbard-I approach to 4$f$ correlations with a static mean-field treatment of t