We show that crystals of molecular nanomagnets can exhibit giant magnetic relaxation due to the Dicke superradiance of electromagnetic waves. Rigorous treatment of the superradiance induced by a field pulse is presented.
@article{arxiv.cond-mat/0204553,
title = {Superradiance from crystals of molecular nanomagnets},
author = {E. M. Chudnovsky and D. A. Garanin},
journal= {arXiv preprint arXiv:cond-mat/0204553},
year = {2009}
}