Comment on "Hole digging in ensembles of tunneling molecular magnets"

Abstract

Tupitsyn et al. [Phys. Rev. B v69, 132406 (2004)] have recently reported results for the relaxation of crystalline systems of single--molecule magnets, such as Fe_8. They claim that, quite generally, (1) the magnetization and hole widths of field--distributions evolve with time t as sqrt{t}, and (2) the holes' line shapes are Lorentzian. We give a counter--example to these conclusions, and show that the main assumption on which they rest is invalid.

arXiv comment3 LaTeX pages, 4 eps figures. Additional text and figures. Submitted to PRB on 4 October 2004. Accepted on 4 November 2004

References in corpus (4)

• Magnetization Process of Single Molecule Magnets at Low Temperatures
• 'Hole-digging' in ensembles of tunneling Molecular Magnets
• How systems of single-molecule magnets magnetize at low temperatures
• Reply to the Comment on the 'Hole-digging' in ensembles of tunneling molecular magnets

Cited by in corpus (5)

• Landau-Zener tunneling in the presence of weak intermolecular interactions in a crystal of Mn4 single-molecule magnets
• Self-organized patterns of macroscopic quantum tunneling in molecular magnets
• Time relaxation of interacting single--molecule magnets
• Reply to the Comment on the 'Hole-digging' in ensembles of tunneling molecular magnets
• Dipolar-controlled spin tunneling and relaxation in molecular magnets