Positive local magnetization in the superconducting state of PrOs4Sb12

Shigeru Kasahara, Kazuto Hirata, Tsuyoshi Tamegai, Hitoshi Sugawara, Daisuke Kikuchi, Hideyuki Sato

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Local magnetization measurements were performed by micro Hall-probe technique in the superconducting state of PrOs4Sb12, in which the time-reversal symmetry is broken. We have observed positive, i.e. ferromagnetic like, local magnetic induction just below the superconducting transition temperature, which changes into a usual Meissner signal as temperature goes down. The signal is dependent on the measuring points of the sample surface, and may be interpreted as a sign of the dilute magnetic moment arising from spontaneous current in the superconducting state. The characteristics of the superconductivity in PrOs4Sb12 including the presence of possible spontaneous magnetization is discussed based on the local magnetization measurements.

Original languageEnglish
Pages (from-to)71-75
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - Oct 1 2007
Externally publishedYes

Keywords

  • Broken time-reversal symmetry
  • Filled skutterudites
  • Local magnetization
  • PrOsSb
  • Spontaneous field

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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