グラファイト超薄膜の超伝導近接効果

• 神田 晶申

  筑波大学数理物質科学研究科・学際物質科学研究センター CREST-JST

• 塚越 一仁

  産業技術総合研究所 CREST-JST

書誌事項

タイトル別名

• Superconducting Proximity Effect in Multilayer Graphene
• グラファイト チョウハクマク ノ チョウデンドウ キンセツ コウカ

抄録

Since the experimental discovery of graphene (single layer of graphite) in 2004, the research of single and multi-layer graphene has attracted much attention both theoretically and experimentally. In this article, from the experimental point of view, we describe the simple and special preparation of single and multi-layer graphene devices and report our recent stydy on superconducting proximity effect in multilayer graphene. As the gate voltage is swept, the proximity-induced superconductivity in multilayer graphene shows the bipolar behavior, from the hole supercurrent to the electron supercurrent. The following unusual facts are found: (1) for an arbitrary normal state resistance, the electron critical supercurrent is larger than the hole critical supercurrent, indicating the breakdown of the electron-hole symmetry. (2) The temperature dependence of the critical supercurrent cannot be explained by the standard theory for the superconducting proximity effect.

収録刊行物

• 表面科学

  表面科学 29 (5), 315-320, 2008

  公益社団法人 日本表面科学会

キーワード

• graphene
• multilayer graphene
• superconducting proximity effect
• electric field effect
• mechanical cleavage

詳細情報

• CRID: 1390282681434774528
• NII論文ID: 10021166241
• NII書誌ID: AN00334149
• DOI: 10.1380/jsssj.29.315
• ISSN: 18814743
• ISSN: 03885321
• NDL書誌ID: 9507502
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9507502
• Web Site: http://www.jstage.jst.go.jp/article/jsssj/29/5/29_5_315/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可