Cluster Toroidal Multipoles Formed by Electric-Quadrupole and Magnetic-Octupole Trimers: A Possible Scenario for Hidden Orders in Ca${}_5$Ir${}_3$O${}_{12}$

Satoru Hayami, Satoshi Tsutsui, Hiroki Hanate +3

Cluster multipole orderings composed of atomic high-rank multipole moments are theoretically investigated with a 5$d$-electron compound Ca${}_5$Ir${}_3$O${}_{12}$ in mind. Ca${}_5$Ir${}_3$O$…