Pair tunneling in ErRh4B4 films

C. P. Umbach, A. M. Goldman

Research output: Contribution to journalArticlepeer-review


Pair-tunneling measurements have been carried out on ErRh4B4-LuxOy-In thin-film junctions. The Fraunhofer-like pattern of the magnetic-field dependence of the dc Josephson current has been found to split at a temperature just above the reentrant transition of ErRh4B4. This suggests the onset of a magnetic structure of semimacroscopic scale which does not break up the superconductivity of the ErRh4B4 electrode into disconnected domains, at least within the surface region probed (∼ 150).

Original languageEnglish (US)
Pages (from-to)1433-1436
Number of pages4
JournalPhysical Review Letters
Issue number20
StatePublished - Jan 1 1982


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