A RIXS investigation of the crystal-field splitting of Sm${}^{3+}$ in SmB${}_6$

Andrea Amorese, Oliver Stockert, Kurt Kummer +7

The crystal-field (CF) splitting of the ${}^6{H}_{5/2}$ Hund's rule ground state of Sm${}^{3+}$ in the strongly correlated topological insulator SmB${}_6$ has been determined with high res…