Jahn-Teller driven quadrupolar ordering and spin-orbital dimer formation in GaNb${}_4$Se${}_8$

Tsung-Han Yang, Tieyan Chang, Yu-Sheng Chen +1

The lacunar spinel GaNb${}_4$Se${}_8$ is a tetrahedral cluster Mott insulator where spin-orbit coupling on molecular orbitals and Jahn-Teller energy scales are competitive. GaNb${}_4$Se$…