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Kashiwaya, Hiromi*; Shirai, Kazumi*; Matsumoto, Tetsuro*; Shibata, Hajime*; Kambara, Hiroshi*; Ishikado, Motoyuki; Eisaki, Hiroshi*; Iyo, Akira*; Shamoto, Shinichi; Kurosawa, Itaru*; et al.
Applied Physics Letters, 96(20), p.202504_1 - 202504_3, 2010/05
Times Cited Count:28 Percentile:71.27(Physics, Applied)The -axis transport properties of a high-pressure synthesized PrFeAsO 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 -axis of 2.9 10 A/cm is two orders of magnitude larger than that in BiSrLaCuO. The appearance of a hysteresis in the current-voltage curve below is the manifestation of the intrinsic Josephson effect similar to that in cuprate superconductors. The suppression of the critical current-normal resistance ( ) product is explained by an inspecular transport in -wave pair potential.