234 citations · 622 across the 7 of their papers we have counts for
7 papers
Spin dynamics in the pseudogap state of a high-temperature superconductor
V. Hinkov, P. Bourges, S. Pailhes +7
The pseudogap is one of the most pervasive phenomena of high temperature superconductors. It is attributed either to incoherent Cooper pairing setting in above the superconducting…
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…
Doping induced magnetic clusters and Co spin state transition in Na_xCoO_2 with 0.78<x<.97
C. Bernhard, Ch. Niedermayer, A. Drew +7
By muon spin rotation we investigated the magnetic properties of a series of highly Na doped NaxCoO2 single crystals with 0.78(1)<x<0.97(1). Our data provide evidence for an intrin…
Spin singlet pairing in the superconducting state of NaxCoO2\cdot1.3H2O: evidence from a ^{59}Co Knight shift in a single crystal
Guo-qing Zheng, Kazuaki Matano, D. P. Chen +1
We report a ^{59}Co Knight shift measurement in a single crystal of the cobalt oxide superconductor Na_{x}CoO_2\cdot1.3H_2O (T_c=4.25 K). We find that the shift due to the spin sus…
Charge ordering and magneto-polarons in NaCoO
C. Bernhard, A. V. Boris, N. N. Kovaleva +6
Using spectral ellipsometry, we have measured the dielectric function of a NaCoO crystal that exhibits bulk antiferromagnetism with T=19.8 K. We identify two…
The crystal growth and characterization of NaxCoO2 and NaxCoO2yH2O
D. P. Chen, H. C. Chen, A. Maljuk +4
A systematic study of NaxCoO2 (x=0.50 - 0.90) and NaxCoO2 yH(D)2O (x=0.26 - 0.42, y=1.3) has been performed to determine phase stability and the effect of hydration on the structur…