Crystal Field -AS_z^2 Does Not Produce One-Phonon Transitions With Delta S_z=+-2 [Comment on EPL 46, 692 (1999) by Leuenberger and Loss]

Abstract

Recently Leuenbeger and Loss suggested a theory of phonon-assisted relaxation in a molecular nanomagnet Mn-12 that "contrary to previous results is in reasonably good agreement ... with all experimental parameter values known so far". The purpose of this Comment is to show that the model of Leuenberger and Loss and its comparison with experiment are premised upon their incorrect use of the linear formula for the strain tensor. The spin-phonon coupling introduced by Leuenberger and Loss disappears if the nonlinear term in the strain tensor is taken into account.

2 pages, no figures, submitted to EPL

References in corpus (1)

• Spin Tunneling and Phonon-assisted Relaxation in Mn12-acetate

Cited by in corpus (7)

• Spin tunneling via dislocations in Mn-12 acetate crystals
• Dislocation-induced spin tunneling in Mn-12 acetate
• Spin dynamics of Mn12-acetate in the thermally-activated tunneling regime: ac-susceptibility and magnetization relaxation
• Geometric-phase interference in a Mn_{12} single-molecule magnet with four-fold rotational symmetry
• Photon-Induced Magnetization Changes in Single-Molecule Magnets
• Magneto-elastic waves in crystals of magnetic molecules
• Density Matrix Equation for a Bathed Small System and its Application to Molecular Magnets