Zeeman split Kramers doublets in spin-supersolid candidate Na${}_2$BaCo(PO${}_4$)${}_2$

T. I. Popescu, N. Gora, F. Demmel +6

Na${}_2$BaCo(PO${}_4$)${}_2$ is a triangular antiferromagnet that displays highly efficient adiabatic demagnetization cooling (J. Xiang $\text{et al.}$ Nature $625$, 270 (…