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cond-mat.str-el2005
New low-temperature phases in NaxCoO2 linked to quantum criticality
F. Rivadulla, M. Banobre-Lopez, M. Garcia-Hernandez +2
New electronic phases have been identified and placed in the (T,H) phase diagram of metallic NaxCoO2. At low Na-content (x = 0.36), the magnetic susceptibility diverges with a powe…
cond-mat.str-el2004
Quantum critical behaviour in NaxCoO2
F. Rivadulla, M. Banobre-Lopez, M. A. Lopez-Quintela +1
We report the divergence of the nonlinear component of the bulk susceptibility in NaxCoO2 (0.3<x<0.62) as T goes to 0 K. These experiments provide an striking evidence of the exist…