MQT in trigonal molecule magnets

Quantum tunneling of magnetization in trigonal single-molecule magnets.
Junjie Liu, Enrique del Barco, and Stephen Hill
Phys. Rev. B 85, 012406 (2012)

Zeeman diagram for a spin S =6 multiplet with easy-axis anisotropy [D<0 in Eq. (1)] and H//z. All possible nonzero tunneling gaps for C3 symmetry are labeled according to the scheme discussed in the main text. The inset shows the HT
dependence of the odd-n tunneling gaps.