Superconductivity induced by surface polishing in CeIrSi3

Hiroki Iida, Masashi Sato, Noriaki Kimura

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1 Citation (Scopus)

Abstract

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
Volume85
Issue number7
DOIs
Publication statusPublished - 2016 Jul 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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