49 citations · 116 across the 5 of their papers we have counts for
5 papers
Electronic texture of the thermoelectric oxide Na0.75CoO2
M. -H. Julien, C. de Vaulx, H. Mayaffre +9
From 59Co and 23Na NMR, we demonstrate the impact of the Na+ vacancy ordering on the cobalt electronic states in Na0.75CoO2: at long time scales, there is neither a disproportionat…
Elliptical hole pockets in the Fermi surfaces of unhydrated and hydrated sodium cobalt oxides
J. Laverock, S. B. Dugdale, J. A. Duffy +9
The surprise discovery of superconductivity below 5K in sodium cobalt oxides when hydrated with water has caught the attention of experimentalists and theorists alike. Most explana…
Intraplanar Magnetic Excitations in Na0.5CoO2: An Inelastic Neutron Study
J. Wooldridge, G. Balakrishnan, D. McK. Paul +3
Inelastic neutron scattering measurements mapping the in-plane magnetic interactions of Na0.5CoO2 reveal dispersive excitations at points above an energy gap Eg = 11.5(5) meV at th…
The magnetic field and pressure dependence of the magnetic ordering transition in NaxCoO2 (0.6<x<0.72)
J. Wooldridge, D. McK. Paul, G. Balakrishnan +1
We have measured the magnetic field (H<90 kOe) and pressure (P<10 kbar) dependence of the magnetic ordering temperature, Tmag, in single crystal samples of NaxCoO2 for a range of N…
Investigation of the Spin Density Wave in NaxCoO2
J. Wooldridge, D. McK Paul, G. Balakrishnan +1
Magnetic susceptibility, transport and heat capacity measurements of single crystal NaxCoO2 (x=0.71) are reported. A transition to a spin density wave (SDW) state at Tmag = 22 K is…