title: 59Co NMR evidence for charge ordering below T_(CO) approximately 51 K in Na0.5CoO2.
abstract: The CoO2 layers in NaxCoO2 may be viewed as a spin S=1/2 triangular-lattice doped with charge carriers. The underlying physics of the cobaltates is very similar to that of the high T_(c) cuprates. We will present unequivocal 59Co NMR evidence that below T_(CO) approximately 51 K, the insulating ground state of the itinerant antiferromagnet Na0.5CoO2 (T_(N) approximately 86 K) is induced by charge ordering.
authors: Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada.
authors: F L
authors: FL
authors: Ning
authors: S M
authors: SM
authors: Golin
authors: K
authors: K
authors: Ahilan
authors: T
authors: T
authors: Imai
authors: G J
authors: GJ
authors: Shu
authors: F C
authors: FC
authors: Chou