Emergent electronic and magnetic state in Ca3Ru 2O7 induced by Ti doping

X. Ke, J. Peng, D. J. Singh, Tao Hong, Wei Tian, C. R. Dela Cruz, Zhiqiang Mao

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Abstract

We report an emergent electronic and magnetic state in the bilayer ruthenate Ca3Ru2O7 upon doping with a small concentration of Ti on the Ru sites. In contrast to a quasi-two-dimensional metallic state in Ca3Ru2O7, which has an antiferromagnetic (AF) state formed by ferromagnetic (F) bilayers stacked antiferromagnetically along the c-axis, we find an insulating ground state with a "G"-type nearest-neighbor AF order in Ca3(Ru 1-xTix)2O7 for x 0.03. The close proximity of these two distinct electronic and magnetic states demonstrates unique competing magnetic interactions in Ca3Ru2O 7, which provides a rare opportunity to investigate the interplay between correlated metal physics and Mott physics.

Original languageEnglish (US)
Article number201102
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number20
DOIs
Publication statusPublished - Nov 4 2011

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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