Pressure effects in the triangular layered cobaltites Nax Co O2

G. Garbarino, M. Monteverde, M. Núñez-Regueiro, C. Acha, M. L. Foo, R. J. Cava

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10 Scopus citations


We have measured transport properties as a function of temperature and pressure up to 30 GPa in the Nax Co O2 system. For the x=0.5 sample, the transition temperature at 53 K increases with pressure, while paradoxically the sample passes from an insulating state to a metallic ground state. Compression on the x=0.75 sample transforms the sample from a metallic state to an insulating state. We discuss our results in terms of interactions between band structure effects and Na+ order.

Original languageEnglish (US)
Article number064105
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number6
StatePublished - Feb 13 2008

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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