Electron correlation in the two-dimensional triangle lattice of Na${}_x$CoO${}_2$

J. Sugiyama, J. H. Brewer, E. J. Ansaldo +4

Magnetism of layered cobaltites Na${}_x$CoO${}_2$ with $x$ = 0.6 and 0.9 has been investigated by a positive muon spin rotation and relaxation (${\mu }^{+}$SR) spectroscopy together with magn…