Fourfold symmetry in the plane of the upper critical field for single-cr: Evidence for pairing in a high superconductor

Yoji Koike, Tsutomu Takabayashi, Takashi Noji, Terukazu Nishizaki, Norio Kobayashi

研究成果: Article査読

47 被引用数 (Scopus)

抄録

We have found clear anisotropy in the (Formula presented) plane with fourfold symmetry of the upper critical field for single-crystal (Formula presented)(Formula presented)(Formula presented)(Formula presented)(Formula presented)(Formula presented), which is very similar to that formerly observed in (Formula presented)(Formula presented)Cu(Formula presented) . This is neither attributed to the twin structure in the orthorhombic phase nor to the anisotropy of the Fermi surface but is explained as being mainly due to the anisotropy of the superconducting energy gap owing to (Formula presented) pairing, which supports (Formula presented) pairing in a high-(Formula presented) superconductor.

本文言語English
ページ(範囲)R776-R779
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
54
2
DOI
出版ステータスPublished - 1996 1月 1

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

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