Experimental test for subdominant superconducting phases with complex order parameters in cuprate grain boundary junctions

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Abstract

An experiment to test the formation of subdominant superconducting phases with broken time-reversal symmetry in d-wave superconductors was presented. The variation of the critical current of grain boundary junctions with temperature and magnetic fields was measured to study the formation of a complex order parameter along the surface of YBa2Cu3O7-x films. The onset of a superconducting order parameter was found to affect the magnitude and magnetic field diffraction patterns of the supercurrents.

Original languageEnglish (US)
Article number047001
Pages (from-to)470011-470014
Number of pages4
JournalPhysical review letters
Volume88
Issue number4
DOIs
StatePublished - Jan 28 2002

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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