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Evidence for non-conventional pairing in NaCoOyHO
Jean-Pascal Rueff, M. Calandra, M. D'astuto +10
We report on first investigation of the lattice dynamics in the novel superconducting material NaCoO1.3HO and the non-hydrated parent compound Na$\_{0.7}…
Polarized resonant inelastic x-ray scattering as an ultra-fine probe of excited states in La2CuO4
A. Shukla, M. Calandra, M. Taguchi +3
X-ray absorption is the standard method to probe the unoccupied density of states at a given edge. Here we show that polarized Resonant Inelastic X-Ray Scattering in La2CuO4 at the…
Saturation of electrical resistivity
O. Gunnarsson, M. Calandra, J. E. Han
Resistivity saturation is observed in many metallic systems with a large resistivity, i.e., when the resistivity has reached a critical value, its further increase with temperature…
Violation of Ioffe-Regel condition but saturation of resistivity of the high Tc cuprates
M. Calandra, O. Gunnarsson
We demonstrate that the resistivity data of a number of high Tc cuprates, in particular La(2-x)SrxCuO4, are consistent with resistivity saturation, although the Ioffe-Regel conditi…