Thermal conductivity of triangular-lattice antiferromagnet Na2BaCo(PO4)2: Absence of itinerant fermionic excitations

Y. Y. Huang, D. Z. Dai, C. C. Zhao +6

We present the ultralow-temperature specific heat and thermal conductivity measurements on single crystals of triangular-lattice antiferromagnet Na${}_2$BaCo(PO${}_4$)${}_2$, which was r…