Low energy spin fluctuations in the heavy fermion compound Ce$_{0.925}$La$_{0.075}$Ru$_{2}$Si$_{2}$

W. Knafo; S. Raymond; B. Fåk; M. A. Adams; P. Lejay; J. Flouquet

doi:10.1016/j.physb.2004.12.049

paper

Low energy spin fluctuations in the heavy fermion compound Ce $_{0.925}$ La $_{0.075}$ Ru $_{2}$ Si $_{2}$

arXiv:cond-mat/0501574 · doi:10.1016/j.physb.2004.12.049

Abstract

We report inelastic neutron scattering measurements performed on a single crystal of the heavy fermion compound Ce $_{0.925}$ La $_{0.075}$ Ru $_{2}$ Si $_{2}$ , which is at the borderline between an antiferromagnetically ordered and a paramagnetic ground state. Intensity maps as a function of wavevector and energy ( $0.1 < E < 1.2$ meV) were obtained at temperatures $T = 0.1$ and 2 K, using the time-of-flight spectrometer IRIS. An unexpected saturation of the relaxation rate and static susceptibility of the spin fluctuations is found at low temperatures.

2 pages, 2 figures, SCES'04 Proceedings

Low energy spin fluctuations in the heavy fermion compound Ce0.925​La0.075​Ru2​Si2​

Abstract

Low energy spin fluctuations in the heavy fermion compound Ce $_{0.925}$ La $_{0.075}$ Ru $_{2}$ Si $_{2}$