644 citations · 1k across the 7 of their papers we have counts for
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Anomalous high-temperature Hall effect on the triangular lattice in Na_xCoO_2
Yayu Wang, Nyrissa S. Rogado, R. J. Cava +1
The Hall coefficient R_H of Na_xCoO_2 (x = 0.68) behaves anomalously at high temperatures. From 200 to 500 K, R_H increases linearly with T to 8 times the expected Drude value, wit…
Chemical Instability of the Cobalt Oxyhydrate Superconductor under Ambient Conditions
M. L. Foo, R. E. Schaak, V. L. Miller +8
The layered sodium cobalt oxyhydrate superconductor Na0.3CoO2*1.4H2O is shown through X-ray diffraction and thermogravimetric studies to be one of a series of hydrated phases of Na…
MgB2 Energy Gap Determination by Scanning Tunneling Spectroscopy
T. W. Heitmann, S. D. Bu, D. M. Kim +13
We report scanning tunneling spectroscopy (STS) measurements of the gap properties of both ceramic MgB2 and c-axis oriented epitaxial MgB2 thin films. Both show a temperature depen…
Loss of superconductivity and structural transition in Mg1-xAlxB2
J. S. Slusky, N. Rogado, K. A. Regan +8
The basic magnetic and electronic properties of most binary compounds have been well known for decades. Therefore the recent announcement of superconductivity at 39 K in the simple…