Bulk superconductivity and disorder in single crystals of LaFePO

Details Bulk superconductivity and disorder in single crystals of LaFePO Bulk superconductivity and disorder in single crystals of LaFePO

2008-10-30

arxiv.org/abs/0810.5368v3

Physics

Condensed Matter

Superconductivity

9 pages, 11 figures

Scientific paper

We have studied the intrinsic normal and superconducting properties of the oxypnictide LaFePO. These samples exhibit bulk superconductivity and the evidence suggests that stoichiometric LaFePO is indeed superconducting, in contrast to other reports. We find that superconductivity is independent of the interplane residual resistivity $\rho_0$ and discuss the implications of this on the nature of the superconducting order parameter. Finally we find that, unlike $T_c$, other properties in single-crystal LaFePO including the resistivity and magnetoresistance, can be very sensitive to disorder.

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