Suppression of proximity effect and the enhancement of p-wave superconductivity in the Sr2RuO4-Ru system

Y. A. Ying, Y. Xin, B. W. Clouser, E. Hao, N. E. Staley, R. J. Myers, L. F. Allard, D. Fobes, T. Liu, Z. Q. Mao, Y. Liu

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

We report unexpected phenomena observed on the Sr2RuO4-Ru eutectic phase featuring Ru islands embedded in a bulk crystal of the chiral p-wave superconductor Sr2RuO4. It was found that the Sr2RuO4/Ru interface is atomically sharp, terminated uniformly by a Sr/O layer. Surprisingly, the proximity-induced p-wave superconducting energy gap predicted by theory was not detected inside Ru islands. Our results suggest that the previously observed enhancement of superconductivity in this eutectic phase occurs away from rather than near the Sr2RuO4/Ru interface, where dislocations and phonon hardening were found.

Original languageEnglish (US)
Article number247004
JournalPhysical Review Letters
Volume103
Issue number24
DOIs
StatePublished - Dec 11 2009

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Ying, Y. A., Xin, Y., Clouser, B. W., Hao, E., Staley, N. E., Myers, R. J., Allard, L. F., Fobes, D., Liu, T., Mao, Z. Q., & Liu, Y. (2009). Suppression of proximity effect and the enhancement of p-wave superconductivity in the Sr2RuO4-Ru system. Physical Review Letters, 103(24), [247004]. https://doi.org/10.1103/PhysRevLett.103.247004