Presence and absence of itinerant gapless excitations in the quantum spin liquid candidate EtMe${}_3$Sb[Pd(dmit)${}_2$]${}_2$

M. Yamashita, Y. Sato, T. Tominaga +6

EtMe${}_3$Sb[Pd(dmit)${}_2$]${}_2$, an organic Mott insulator with nearly isotropic triangular lattice, is a candidate material for a quantum spin liquid, in which the zero-point fluctua…