Gap inhomogeneity, phase separation and a pseudogap in Bi2Sr2CaCu2O8+δ

Azusa Matsuda; Takenori Fujii; Takao Watanabe

doi:10.1016/S0921-4534(02)02378-X

Gap inhomogeneity, phase separation and a pseudogap in Bi₂Sr₂CaCu₂O_8+δ

Azusa Matsuda^*, Takenori Fujii, Takao Watanabe

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

39 Citations (Scopus)

Abstract

Gap inhomogeneity in Bi₂Sr₂CaCu₂O₈ has been studied by low-temperature STM. We found a systematic relation between the local gap energy and local background density of states. A model analysis of the dip-hump structure gave evidence of in-plane charge inhomogeneity. The temperature/doping dependences of the pattern shape of inhomogeneity as well as the gap distribution function were measured. We could identify the signature of phase separation into the superconducting and pseudogapped phases as the appearance of a double-peak structure in the distribution function.

Original language	English
Pages (from-to)	207-208
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	388-389
DOIs	https://doi.org/10.1016/S0921-4534(02)02378-X
Publication status	Published - 2003 May
Externally published	Yes
Event	proceedings of the 23rd international conference on low temper - Hiroshima, Japan Duration: 2002 Aug 20 → 2002 Aug 27

Keywords

BiSrCaCuO
Gap inhomogeneity
Pseudoga p

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/S0921-4534(02)02378-X

Cite this

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abstract = "Gap inhomogeneity in Bi2Sr2CaCu2O8 has been studied by low-temperature STM. We found a systematic relation between the local gap energy and local background density of states. A model analysis of the dip-hump structure gave evidence of in-plane charge inhomogeneity. The temperature/doping dependences of the pattern shape of inhomogeneity as well as the gap distribution function were measured. We could identify the signature of phase separation into the superconducting and pseudogapped phases as the appearance of a double-peak structure in the distribution function.",

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T1 - Gap inhomogeneity, phase separation and a pseudogap in Bi2Sr2CaCu2O8+δ

AU - Matsuda, Azusa

AU - Fujii, Takenori

AU - Watanabe, Takao

PY - 2003/5

Y1 - 2003/5

N2 - Gap inhomogeneity in Bi2Sr2CaCu2O8 has been studied by low-temperature STM. We found a systematic relation between the local gap energy and local background density of states. A model analysis of the dip-hump structure gave evidence of in-plane charge inhomogeneity. The temperature/doping dependences of the pattern shape of inhomogeneity as well as the gap distribution function were measured. We could identify the signature of phase separation into the superconducting and pseudogapped phases as the appearance of a double-peak structure in the distribution function.

AB - Gap inhomogeneity in Bi2Sr2CaCu2O8 has been studied by low-temperature STM. We found a systematic relation between the local gap energy and local background density of states. A model analysis of the dip-hump structure gave evidence of in-plane charge inhomogeneity. The temperature/doping dependences of the pattern shape of inhomogeneity as well as the gap distribution function were measured. We could identify the signature of phase separation into the superconducting and pseudogapped phases as the appearance of a double-peak structure in the distribution function.

KW - BiSrCaCuO

KW - Gap inhomogeneity

KW - Pseudoga p

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SN - 0921-4534

VL - 388-389

SP - 207

EP - 208

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

T2 - proceedings of the 23rd international conference on low temper

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