Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1998-02-03
Physics
Condensed Matter
Strongly Correlated Electrons
7 pages, Latex, 3 Postscript figures, to be published in Physical Review B
Scientific paper
10.1103/PhysRevB.57.5966
A previous scaling analysis of pressure experiments in heavy fermion is reviewed and enlarged. We show that the critical exponents obtained from this analysis indicate that a one-parameter scaling describes these experiments. We obtain explicitly the enhancemente factors showing that these systems are indeed near criticality and that the scaling approach is appropriate. The physics responsible for the one-parameter scaling and breakdown of hyperscaling is clarified. We discuss a microsocopic theory that is in agreement with the experiments. The scaling theory is generalized for the case the shift and crossover exponents are different. The exponents governing the physical behavior along the non-Fermi liquid trajectory are obtained for this case.
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