Gate-controlled superconducting proximity effect in ultrathin graphite films

T. Sato, T. Moriki, S. Tanaka, A. Kanda, H. Goto, H. Miyazaki, S. Odaka, Y. Ootuka, K. Tsukagoshi, Y. Aoyagi

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We experimentally investigated electrical transport in thin graphite films about 10 nm thick connected to superconducting leads. Proximity-induced superconductivity was observed and the critical supercurrent strongly depends on the gate voltage. From the maximum-to-minimum ratios of the critical supercurrent and the normal state resistance, we conclude that the major part of the supercurrent flows in a few graphene layers close to the gate electrode.

Original languageEnglish
Pages (from-to)1495-1497
Number of pages3
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume40
Issue number5
DOIs
Publication statusPublished - 2008 Mar 1
Externally publishedYes

Keywords

  • Graphene
  • Graphite
  • Proximity effect
  • Superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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  • Cite this

    Sato, T., Moriki, T., Tanaka, S., Kanda, A., Goto, H., Miyazaki, H., Odaka, S., Ootuka, Y., Tsukagoshi, K., & Aoyagi, Y. (2008). Gate-controlled superconducting proximity effect in ultrathin graphite films. Physica E: Low-Dimensional Systems and Nanostructures, 40(5), 1495-1497. https://doi.org/10.1016/j.physe.2007.09.149