The c-axis transport properties of a high-pressure synthesized PrFeAsO 0.7 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× 105A/cm2 is two orders of magnitude larger than that in Bi2 Sr1.6La0.4Cu O6+δ. The appearance of a hysteresis in the current-voltage curve below Tc is the manifestation of the intrinsic Josephson effect similar to that in cuprate superconductors. The suppression of the critical current-normal resistance (Ic Rn) product is explained by an inspecular transport in s±-wave pair potential.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)