Magnetic penetration depth in the FeAs-based superconductor KFe 2As2

Kazuki Ohishi, Yasuyuki Ishii, Isao Watanabe, Hideto Fukazawa, Taku Saito, Yoh Kohori, Kunihiro Kihou, Chul Ho Lee, Hijiri Kito, Akira Iyo, Hiroshi Eisaki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Transverse-field muon spin rotation measurements were performed on the iron-based superconductor, KFe2As2, in order to investigate the superconducting gap mechanism. We found that the temperature dependence of the magnetic penetration depth λ shows multiple gap-like behavior and that λ depends on the field. These results suggest the existence of quasiparticle excitations outside the vortices.

Original languageEnglish
Article numberSB046
JournalJournal of the Physical Society of Japan
Issue numberSUPPL.B
Publication statusPublished - 2012 Sept 1
Externally publishedYes


  • Iron-based superconductivity
  • KFeAs
  • Penetration depth
  • μSR

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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