Calculating branching ratio and spin-orbit coupling from first-principles: A formalism and its application to iridates

Jae-Hoon Sim, Hongkee Yoon, Sang Hyeon Park +1

We present a simple technique to calculate spin-orbit coupling, $⟨\mathbf{L}\cdot \mathbf{S}⟩$, and branching ratio measured in x-ray absorption spectroscopy. Our method is…