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

doi:10.1016/j.physc.2010.01.027

Pseudogap phase boundary in overdoped Bi₂Sr₂CaCu ₂O_8+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

ENG - Applied Physics

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

In order to elucidate the relationship between the pseudogap and high-T_c superconductivity, the characteristic pseudogap temperature T in Bi₂Sr₂CaCu₂O_8+δ system has been systematically evaluated as a function of doping, especially focusing on its overdoped region, by measuring the out-of-plane resistivity ρ_c. Overdoped samples have been prepared by annealing TSFZ-grown Bi₂Sr₂CaCu₂O_8+δ single crystals under the high oxygen pressures (990 kgf/cm²). At a zero field, the ρ_c 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 language	English
Pages (from-to)	S153-S154
Journal	Physica C: Superconductivity and its applications
Volume	470
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/j.physc.2010.01.027
Publication status	Published - 2010 Dec

Keywords

BiSrCaCuO
Magnetoresistance
Out-of-plane resistivity
Pseudogap
Superconductive fluctuation

ASJC Scopus subject areas

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

Access to Document

10.1016/j.physc.2010.01.027

Cite this

Murata, K., Kushibiki, H., Watanabe, T., Kudo, K., Nishizaki, T., Kobayashi, N., Yamada, K., Noji, T., & Koike, Y. (2010). Pseudogap phase boundary in overdoped Bi₂Sr₂CaCu ₂O_8+δ studied by measuring out-of-plane resistivity under the magnetic fields. Physica C: Superconductivity and its applications, 470(SUPPL.1), S153-S154. https://doi.org/10.1016/j.physc.2010.01.027

Murata, K, Kushibiki, H, Watanabe, T, Kudo, K, Nishizaki, T, Kobayashi, N, Yamada, K, Noji, T & Koike, Y 2010, 'Pseudogap phase boundary in overdoped Bi₂Sr₂CaCu ₂O_8+δ studied by measuring out-of-plane resistivity under the magnetic fields', Physica C: Superconductivity and its applications, vol. 470, no. SUPPL.1, pp. S153-S154. https://doi.org/10.1016/j.physc.2010.01.027

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

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.",

keywords = "BiSrCaCuO, Magnetoresistance, Out-of-plane resistivity, Pseudogap, Superconductive fluctuation",

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

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T1 - Pseudogap phase boundary in overdoped Bi2Sr2CaCu 2O8+δ studied by measuring out-of-plane resistivity under the magnetic fields

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

PY - 2010/12

Y1 - 2010/12

N2 - 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.

AB - 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.

KW - BiSrCaCuO

KW - Magnetoresistance

KW - Out-of-plane resistivity

KW - Pseudogap

KW - Superconductive fluctuation

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