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

研究成果: Conference article査読


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.

ジャーナルPhysica C: Superconductivity and its applications
出版ステータスPublished - 2003 5
イベントproceedings of the 23rd international conference on low temper - Hiroshima, Japan
継続期間: 2002 8 202002 8 27

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

フィンガープリント 「Superconducting gap and pseudogap in Bi<sub>2</sub>Sr<sub>2</sub>Ca<sub>2</sub>Cu<sub>3</sub>O <sub>10+δ</sub> by short-pulse interlayer tunneling spectroscopy」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。