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Possible quantum criticality and coexistence of spontaneous ferromagnetism and field-induced metamagnetism in triple-layered Sr4Ru3O10

G. Cao·S. Chikara·J. W. Brill·P. Schlottmann
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Abstract

A thermodynamic and transport study of Sr4Ru3O10 as a function of temperature and magnetic field are presented. The central results include a growing specific heat C with increasing field B, a divergent magnetic contribution to C/T at low temperatures, an abrupt jump and a peak in C/T at 2.90 T and 7 T for B||ab-plane and B||c-axis, respectively, and corresponding changes in the low T power laws of the resistivity. The novelty of this work lies in the fact that the quantum fluctuations occur in a system that shows both intralayer metamagnetism and interlayer spontaneous ferromagnetism, a feature characteristically different from all other systems involving quantum criticality.

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G. Cao, S. Chikara, J. W. Brill, P. Schlottmann. 2006-05-30. Possible quantum criticality and coexistence of spontaneous ferromagnetism and field-induced metamagnetism in triple-layered Sr4Ru3O10. https://arxiv.org/abs/cond-mat/0605734

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