The first femtosecond carrier relaxation dynamics studies in heavy fermion compounds are presented. The carrier relaxation time shows a dramatic hundred-fold increase below the Kondo temperature revealing a dramatic sensitivity to the electronic density of states near the Fermi level.
@article{arxiv.cond-mat/0201194,
title = {Carrier relaxation dynamics in heavy fermion compounds},
author = {J. Demsar and L. A. Tracy and R. D. Averitt and S. A. Trugman and J. L. Sarrao and A. J. Taylor},
journal= {arXiv preprint arXiv:cond-mat/0201194},
year = {2007}
}