Superconducting gap and pseudogap in Bi2Sr2Ca2Cu3O 10+δ by short-pulse interlayer tunneling spectroscopy

Yoshiharu Yamada*, Kenkichi Anagawa, Takenori Fujii, Takao Watanabe, Azusa Matsuda, Takasada Shibauchi, Minoru Suzuki

*この研究の対応する著者

研究成果: Conference article査読

抄録

We have measured the superconducting gap, pseudogap and their doping dependence of CuO2 trilayer high-Tc superconductor Bi2Sr2Ca2Cu3O10+δ by short-pulse interlayer tunneling spectroscopy. While both gaps exhibit temperature dependence similar to those for the bilayer system, their doping dependence behaves differently from that of Tc, presenting an anomalous relationship between Tc and the gap magnitude. In the overdoped region, Tc remains almost unchanged from its optimum value irrespective of doping, while the gap decreases with increasing doping. This is suggestive of inequivalent hole doping in the inner and outer planes, which is thought to occur in trilayer systems.

本文言語English
ページ(範囲)285-286
ページ数2
ジャーナルPhysica C: Superconductivity and its applications
388-389
DOI
出版ステータスPublished - 2003 5月
外部発表はい
イベントproceedings of the 23rd international conference on low temper - Hiroshima, Japan
継続期間: 2002 8月 202002 8月 27

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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