Quasiparticle Relaxation Dynamics in Heavy Fermion Compounds

J. Demsar, R. D. Averitt, K. H. Ahn, M. J. Graf, S. A. Trugman, V. V. Kabanov, J. L. Sarrao, A. J. Taylor

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

We present the first femtosecond studies of electron-phonon ([Formula presented]-ph) thermalization in heavy-fermion compounds. The [Formula presented]-ph thermalization time [Formula presented] increases below the Kondo temperature by more than 2 orders of magnitude as [Formula presented] is approached. Analysis using the two-temperature model and numerical simulations based on Boltzmanns equations suggest that this anomalous slowing down of the [Formula presented]-ph thermalization derives from the large electronic specific heat and the suppression of scattering between heavy electrons and phonons.

Original languageEnglish (US)
JournalPhysical Review Letters
Volume91
Issue number2
DOIs
StatePublished - Jul 8 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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