Low energy spin fluctuations in the heavy fermion compound Ce_0.925La_0.075Ru₂Si₂

2005/01/24 by W. Knafo, S. Raymond, B. Fåk +3
Physics and Astronomy · #cond-mat.str-el

paper · pdf · doi:10.1016/j.physb.2004.12.049

published as Physica B 359--361 (2005) 38--40 · 2 pages, 2 figures, SCES'04 Proceedings

arxiv created 2005/01/24 · arxiv updated 2009/12/01

Abstract

We report inelastic neutron scattering measurements performed on a single crystal of the heavy fermion compound Ce_0.925La_0.075Ru₂Si₂, 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.

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