Superconducting state of silver-oxide clathrate Ag6O 8AgNO3

Kenji Kawashima, Masaru Ishii, Hirotaka Okabe, Jun Akimitsu, Markus Kriener, Hiroshi Takatsu, Shingo Yonezawa, Yoshiteru Maeno

研究成果査読

6 被引用数 (Scopus)

抄録

We report the normal-state and superconducting properties of the silver-oxide clathrate Ag6O8AgNO3. Electrical resistivity, specific heat, and DC and AC susceptibility measurements as functions of magnetic field and temperature show phase transitions near 90 and 185 K. We find that Ag6O8AgNO3 is a bulk superconductor with the superconducting transition temperature Tc = 1.04 K. We observe a clear kink structure in the field dependence of the real part of AC susceptibility, suggesting a change in vortex state. Furthermore, we present the H-T phase diagram of this compound and estimate the upper critical field Hc2(0) to be about 770 Oe. We also discuss the superconducting properties in a Ginzburg-Landau framework.

本文言語English
論文番号024707
ジャーナルjournal of the physical society of japan
77
2
DOI
出版ステータスPublished - 2月 1 2008
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学一般

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