Spin dynamics in a structurally ordered non-Fermi liquid compound: YbRh_2Si_2

K. Ishida; D. E. MacLaughlin; O. O. Bernal; R. H. Heffner; G. J. Nieuwenhuys; O. Trovarelli; C. Geibel; F. Steglich

doi:10.1016/S0921-4526(02)01646-0

Spin dynamics in a structurally ordered non-Fermi liquid compound: YbRh_2Si_2

Strongly Correlated Electrons 2009-11-07 v1

Authors: K. Ishida , D. E. MacLaughlin , O. O. Bernal , R. H. Heffner , G. J. Nieuwenhuys , O. Trovarelli , C. Geibel , F. Steglich

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Abstract

Muon spin relaxation (muSR) experiments have been carried out at low temperatures in the non-Fermi-liquid heavy-fermion compound YbRh_2Si_2. The longitudinal-field muSR relaxation function is exponential, indicative that the dynamic spin fluctuations are homogeneous. The relaxation rate 1/T_1 varies with applied field as H^{-y}, y = 1.0 \pm 0.1, which implies a scaling law of the form \chi''(\omega) \propto \omega^{-y} f(\omega/T), \lim_{x\to0} f(x) = x for the dynamic spin susceptibility.

Keywords

spin relaxation magnetic materials and spin systems magnetism

Cite

@article{arxiv.cond-mat/0207464,
  title  = {Spin dynamics in a structurally ordered non-Fermi liquid compound: YbRh_2Si_2},
  author = {K. Ishida and D. E. MacLaughlin and O. O. Bernal and R. H. Heffner and G. J. Nieuwenhuys and O. Trovarelli and C. Geibel and F. Steglich},
  journal= {arXiv preprint arXiv:cond-mat/0207464},
  year   = {2009}
}

Comments

5 pages, 2 figures. To be published in proceedings of musr2002 (Physica B)

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