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

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S. Shamoto I. Kurosawa S. Kashiwaya

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classification ❄️ cond-mat.supr-con

keywords c-axiscriticalanisotropycrystalcurrentprfeaso0singletransport

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

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