Superconductivity in amorphous Cr films

H. Aoki, Y. Asada, T. Hatano, K. Nakamura, K. Ogawa, Y. Makino

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Superconducting transition has been observed for the first time in amorphous Cr films prepared by co-sputtering of Cr and BN. Superconducting transition temperatures (Tc) up to 1.14 K have been observed with an orbital contribution (i.e.(dHc2⊥/dT)Tc) as large as 49 kOe K-1. The electronic specific heat coefficient (γ) has been estimated to be about 1.6 times as large as that of amorphous Mo-BN (or Mo-metalloid) alloys. This finding, i.e. the low Tc with the large γ for amorphous Cr is inconsistent with data reported for amorphous alloys of 4d and 5d transition elements. This inconsistency implies a formation of local magnetic moments or spin fluctuation in the amorphous Cr film.

Original languageEnglish
Pages (from-to)735-737
Number of pages3
JournalSolid State Communications
Volume60
Issue number9
DOIs
Publication statusPublished - 1986 Dec

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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