Pseudogap phase boundary in overdoped Bi2Sr2CaCu 2O8+δ studied by measuring out-of-plane resistivity under the magnetic fields

Kousuke Murata, Haruki Kushibiki, Takao Watanabe, Kazutaka Kudo, Terukazu Nishizaki, Norio Kobayashi, Kazuyoshi Yamada, Takashi Noji, Yoji Koike

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In order to elucidate the relationship between the pseudogap and high-Tc superconductivity, the characteristic pseudogap temperature T in Bi2Sr2CaCu2O8+δ system has been systematically evaluated as a function of doping, especially focusing on its overdoped region, by measuring the out-of-plane resistivity ρc. Overdoped samples have been prepared by annealing TSFZ-grown Bi2Sr2CaCu2O8+δ single crystals under the high oxygen pressures (990 kgf/cm2). At a zero field, the ρc showed a metallic behavior down to T c(=62K), while under the magnetic fields of over 3 T, ρc showed typical upturn behavior from around 65 K upon decreasing temperature. This result suggests that the pseudogap and superconductivity are different phenomena.

Original languageEnglish
JournalPhysica C: Superconductivity and its Applications
Volume470
Issue numberSUPPL.1
DOIs
Publication statusPublished - Dec 2010
Externally publishedYes

Fingerprint

Phase boundaries
Superconductivity
superconductivity
Magnetic fields
high pressure oxygen
electrical resistivity
magnetic fields
Doping (additives)
Single crystals
Annealing
Oxygen
Temperature
annealing
temperature
single crystals

Keywords

  • BiSrCaCuO
  • Magnetoresistance
  • Out-of-plane resistivity
  • Pseudogap
  • Superconductive fluctuation

ASJC Scopus subject areas

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

Cite this

Pseudogap phase boundary in overdoped Bi2Sr2CaCu 2O8+δ studied by measuring out-of-plane resistivity under the magnetic fields. / Murata, Kousuke; Kushibiki, Haruki; Watanabe, Takao; Kudo, Kazutaka; Nishizaki, Terukazu; Kobayashi, Norio; Yamada, Kazuyoshi; Noji, Takashi; Koike, Yoji.

In: Physica C: Superconductivity and its Applications, Vol. 470, No. SUPPL.1, 12.2010.

Research output: Contribution to journalArticle

Murata, Kousuke ; Kushibiki, Haruki ; Watanabe, Takao ; Kudo, Kazutaka ; Nishizaki, Terukazu ; Kobayashi, Norio ; Yamada, Kazuyoshi ; Noji, Takashi ; Koike, Yoji. / Pseudogap phase boundary in overdoped Bi2Sr2CaCu 2O8+δ studied by measuring out-of-plane resistivity under the magnetic fields. In: Physica C: Superconductivity and its Applications. 2010 ; Vol. 470, No. SUPPL.1.
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AU - Murata, Kousuke

AU - Kushibiki, Haruki

AU - Watanabe, Takao

AU - Kudo, Kazutaka

AU - Nishizaki, Terukazu

AU - Kobayashi, Norio

AU - Yamada, Kazuyoshi

AU - Noji, Takashi

AU - Koike, Yoji

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