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

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

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Abstract

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.

Original languageEnglish
Article number202504
JournalApplied Physics Letters
Volume96
Issue number20
DOIs
Publication statusPublished - 2010 May 17

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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