Haldane phase, field-induced magnetic ordering and Tomonaga-Luttinger liquid behavior in a spin-one chain compound NiC${}_2$O${}_4$$\cdot$2NH${}_3$

Shuo Li, Zhanlong Wu, Yanhong Wang +12

We performed single-crystal magnetic susceptibility and ${}^1$H NMR measurements on a quasi-1D, spin-1 antiferromagnet NiC${}_2$O${}_4$$\cdot$2NH${}_3$, with temperature down to 100 mK and…