Extended versus local fluctuations in quantum critical Ce(Ru1-xFex)2Ge2 (x=xc=0.76) |
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Authors: | Montfrooij W Aronson M C Rainford B D Mydosh J A Murani A P Haen P Fukuhara T |
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Institution: | University of Michigan, Ann Arbor, MI 48109, USA. |
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Abstract: | We present inelastic neutron scattering experiments, performed near the antiferromagnetic quantum critical point in Ce(Ru0.24Fe0.76)2Ge2. Both local and long-range fluctuations of the local moments are observed, but due to the Kondo effect only the latter are critical. We propose a phenomenological expression which fits the energy E, temperature T, and wave vector q dependences of the dynamic susceptibility, describing the non-Fermi liquid E/T scaling found at every q. |
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