C-axis critical current of a PrFeAsO0.7 single crystal

H. Kashiwaya; K. Shirai; T. Matsumoto; H. Shibata; H. Kambara; M. Ishikado; H. Eisaki; Y. Iyo; S. Shamoto; I. Kurosawa; S. Kashiwaya

doi:10.1063/1.3427464

arXiv · 0912.0598

C-axis critical current of a PrFeAsO0.7 single crystal

H. Kashiwaya·K. Shirai·T. Matsumoto·H. Shibata·H. Kambara·M. Ishikado·H. Eisaki·Y. Iyo·S. Shamoto·I. Kurosawa·S. Kashiwaya

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Abstract

The c-axis transport properties of a high-pressure synthesized PrFeAsO0.7 single crystal are studied using s-shaped junctions. Resistivity anisotropy of about 120 detected at 50 K shows the presence of strong anisotropy in the electronic states. The obtained critical current density for the c-axis of 2.9*10^5 A/cm^2 is two orders of magnitude larger than that in Bi2Sr1.6La0.4CuO6+d. The appearance of a hysteresis in the current-voltage curve below T_c is the manifestation of the intrinsic Josephson effect similar to that in cuprate superconductors. The suppression of the critical current-normal resistance (I_cR_n) product is explained by an inspecular transport in s_pm-wave pair potential.

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H. Kashiwaya, K. Shirai, T. Matsumoto, H. Shibata, H. Kambara, M. Ishikado, H. Eisaki, Y. Iyo, S. Shamoto, I. Kurosawa, S. Kashiwaya. 2009-12-03. C-axis critical current of a PrFeAsO0.7 single crystal. https://doi.org/10.1063/1.3427464

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