S-mixing and quantum tunneling of the magnetization in molecular nanomagnets
arXiv:cond-mat/0404011 · doi:10.1103/PhysRevLett.92.207205
Abstract
The role of $S$-mixing in the quantum tunneling of the magnetization in nanomagnets has been investigated. We show that the effect on the tunneling frequency is huge and that the discrepancy (more than 3 orders of magnitude in the tunneling frequency) between spectroscopic and relaxation measurements in Fe$_8$ can be resolved if $S$-mixing is taken into account.
REVTEX, 10 pages, 3 jpg figures, to appear in PRL