Superconductivity induced by surface polishing in CeIrSi3

Hiroki Iida, Masashi Sato, Noriaki Kimura

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1 Citation (Scopus)


We show that superconductivity observed in the antiferromagnetic state of CeIrSi3, a pressure-induced heavy fermion superconductor, is mainly due to a surface layer induced by mechanical polishing. The superconducting reduction of the electrical resistivity in the antiferromagnetic state strongly depends on the strength of the applied electrical current and dissipates after a heat treatment. These results indicate that mechanical polishing causes an inhomogeneous distortion on the surface of the sample and locally produces a high-pressure region in which the bulk superconductivity arises.

Original languageEnglish
Article number073708
JournalJournal of the Physical Society of Japan
Issue number7
Publication statusPublished - 2016 Jul 15


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