Electronic Correlations in CoO2, the Parent Compound of Triangular Cobaltates

C. de Vaulx, M. -H. Julien, C. Berthier +3

A 59Co NMR study of CoO2, the x=0 end member of AxCoO2 (A = Na, Li...) cobaltates, reveals a metallic ground state, though with clear signs of strong electron correlations: low-ene…