Probing the Two-Fluid Behavior in CeIn3-xSnx by Electron Spin Resonance

Details Probing the Two-Fluid Behavior in CeIn3-xSnx by Electron Spin Resonance Probing the Two-Fluid Behavior in CeIn3-xSnx by Electron Spin Resonance

2011-07-27

arxiv.org/abs/1107.5571v1

Physics

Condensed Matter

Strongly Correlated Electrons

4+ pages, 2 figures and supplemental material

Scientific paper

The CeIn3-xSnx cubic heavy fermion system presents an antiferromagnetic transition at T_N =10 K, for x = 0, that vanishes continuously upon Sn substitution at x_c ~ 0.7. In the vicinity of T_N goes to zero the system shows non-Fermi liquid behavior due to antiferromagnetic critical fluctuations. We show that Gd3+ electron spin resonance (ESR) probes a change in the character of the Ce 4f electron as a function of Sn substitution which follows the description of the two-fluid model for heavy fermions. Besides, some indication for a local class of quantum critical point for this system is discussed.

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