Electron tunneling using STM/STS on iron-based oxypnictides

Yuuki Kawashima, Koichi Ichimura, Toru Kurosawa, Migaku Oda, Satoshi Tanda, Hiroki Takahashi, Hironari Okada, Yoichi Kamihara, Hideo Hosono

Research output: Contribution to journalArticle

2 Citations (Scopus)


We report the electron tunneling study on SmFeAsO1-xF x (x = 0, 0.045, 0.046, 0.069) by using low temperature UHV-STM/STS. The superconducting gap and pseudogap structures are observed on x = 0.045, 0.046, 0.069. We also found similar structures on non-superconducting sample of x = 0. The value of 2Δsc/kTc decreases as T c increases.

Original languageEnglish
Pages (from-to)S315-S316
JournalPhysica C: Superconductivity and its applications
Issue numberSUPPL.1
Publication statusPublished - 2010 Dec
Externally publishedYes


  • Iron-based superconductor
  • Pseudogap
  • Superconducting gap

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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  • Cite this

    Kawashima, Y., Ichimura, K., Kurosawa, T., Oda, M., Tanda, S., Takahashi, H., Okada, H., Kamihara, Y., & Hosono, H. (2010). Electron tunneling using STM/STS on iron-based oxypnictides. Physica C: Superconductivity and its applications, 470(SUPPL.1), S315-S316. https://doi.org/10.1016/j.physc.2009.12.066