Thermodynamic properties of the clathrate-type silver-oxide Ag6O8AgHF2

K. Kawashima, M. Kriener, M. Ishii, Y. Maeno, Jun Akimitsu

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Abstract

We report normal-state and superconducting properties of the clathrate-type silver-oxide Ag6O8AgHF2. We present electrical resistivity, DC- and AC-susceptibility and specific-heat measurements of single crystalline Ag6O8AgHF2. In the normal state, Ag6O8AgHF2 exhibits metallic conductivity and a phase transition near 110 K, possibly a structural phase transition as observed in the related compound Ag6O8AgNO3. The onset of superconductivity of our samples is observed around 1.2-1.5 K, and the H-T phase diagram is determined for the first time. The upper critical field Hc2(0) is estimated to be about 2000-2200 Oe and the coherence length ξGL(0) to be 40 nm.

Original languageEnglish
Pages (from-to)464-470
Number of pages7
JournalPhysica C: Superconductivity and its Applications
Volume468
Issue number6
DOIs
Publication statusPublished - Mar 30 2008
Externally publishedYes

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Keywords

  • 74.25.Ha
  • 74.25.Jb
  • 74.70.-b
  • AC susceptibility
  • AgOAgHF
  • Clathrate-type
  • Resistivity
  • Silver-oxide
  • Specific heat

ASJC Scopus subject areas

  • Condensed Matter Physics

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