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

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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.
12 pages, 4 fugures

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/111004

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0605734
 http://arxiv.org/abs/cond-mat/0605734

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arXiv