Evidencing under-barrier phenomena in a Yb(III) SMM: a joint luminescence/neutron diffraction/SQUID study

We report the synthesis, spectroscopic and magnetic characterisation and ab initio investigation of a new mononuclear ytterbium based complex, [YbTp(2)NO(3)], and discuss the physical mechanisms underlying the slow relaxation of its magnetisation in a moderate static field and at low temperature.