Mesoscopic fluctuations of Josephson current in high-Tc superconductor junctions

K. Sakamoto, Y. Asano, Y. Tanaka, H. Tsuchiura, J. Inoue, S. Kashiwaya

研究成果: Article査読

抄録

The dc Josephson current and its fluctuations in superconductor/dirty normal metal/superconductor junctions are studied numerically by using the recursive Green function method, where a d-wave pairing symmetry is assumed in superconductors as it is in high-Tc materials. The Josephson current is sensitive to the orientation angle (α) between the crystalline axis of the high-Tc superconductors and the normal of the junction interface. When the orientation angle is π/4, the fluctuations of the Josephson current become larger than those with α=0 because of the zero-energy state formed at junction interfaces.

本文言語English
ページ(範囲)221-224
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
412-414
SPEC. ISS.
DOI
出版ステータスPublished - 2004 10 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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