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: Article

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.

元の言語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
出版物ステータスPublished - 2003 5
外部発表Yes

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interlayers
Doping (additives)
Spectroscopy
pulses
spectroscopy
Superconducting materials
temperature dependence
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

これを引用

Superconducting gap and pseudogap in Bi2Sr2Ca2Cu3O 10+δ by short-pulse interlayer tunneling spectroscopy. / Yamada, Yoshiharu; Anagawa, Kenkichi; Fujii, Takenori; Watanabe, Takao; Matsuda, Azusa; Shibauchi, Takasada; Suzuki, Minoru.

:: Physica C: Superconductivity and its Applications, 巻 388-389, 05.2003, p. 285-286.

研究成果: Article

Yamada, Yoshiharu ; Anagawa, Kenkichi ; Fujii, Takenori ; Watanabe, Takao ; Matsuda, Azusa ; Shibauchi, Takasada ; Suzuki, Minoru. / Superconducting gap and pseudogap in Bi2Sr2Ca2Cu3O 10+δ by short-pulse interlayer tunneling spectroscopy. :: Physica C: Superconductivity and its Applications. 2003 ; 巻 388-389. pp. 285-286.
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AU - Yamada, Yoshiharu

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AU - Fujii, Takenori

AU - Watanabe, Takao

AU - Matsuda, Azusa

AU - Shibauchi, Takasada

AU - Suzuki, Minoru

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AB - 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.

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