Comment on "Hole digging in ensembles of tunneling molecular magnets"
Other Condensed Matter
2007-05-23 v2
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.
Keywords
Cite
@article{arxiv.cond-mat/0406641,
title = {Comment on "Hole digging in ensembles of tunneling molecular magnets"},
author = {J. J. Alonso and J. F. Fernandez},
journal= {arXiv preprint arXiv:cond-mat/0406641},
year = {2007}
}
Comments
3 LaTeX pages, 4 eps figures. Additional text and figures. Submitted to PRB on 4 October 2004. Accepted on 4 November 2004