Complex Quantum Phenomena in a Bilayered Calcium Ruthenate

G. Cao; L. Balicas; Y. Xin; E. Dagotto; J. E. Crow; C. S. Nelson; J. P. Hill

Complex Quantum Phenomena in a Bilayered Calcium Ruthenate

Strongly Correlated Electrons 2007-05-23 v1 Materials Science

Authors: G. Cao , L. Balicas , Y. Xin , E. Dagotto , J. E. Crow , C. S. Nelson , J. P. Hill

Abstract

Ca $_3$ Ru $_2$ O $_7$ undergoes an antiferromagnetic transition at $T_{\text{N}}=56$ K, followed by a Mott-like (MI) transition at $T_{\text{MI}}=48$ K. This nonmetallic ground state, with a charge gap of 0.1 eV, is suppressed by a highly anisotropic metamagnetic transition that leads to a fully spin-polarized metallic state. We report the observation of Shubnikov-de Haas oscillations in the \textit{gapped} state, colossal magnetoresistance in the inter-plane resistivity with a large anisotropy different from that observed in the magnetization, and non-Fermi liquid behavior in the metallic state at high magnetic fields.

Keywords

magnetic structure frustrated magnetism magnetic phase transitions

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@article{arxiv.cond-mat/0205151,
  title  = {Complex Quantum Phenomena in a Bilayered Calcium Ruthenate},
  author = {G. Cao and L. Balicas and Y. Xin and E. Dagotto and J. E. Crow and C. S. Nelson and J. P. Hill},
  journal= {arXiv preprint arXiv:cond-mat/0205151},
  year   = {2007}
}

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4 pages 3 figures

Complex Quantum Phenomena in a Bilayered Calcium Ruthenate

Abstract

Keywords

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