STM/STS observations of Pb-doped Bi-2212 single crystals

A. Sugimoto; S. Kashiwaya; H. Eisaki; K. Oka; H. Tuchiura; Y. Tanaka

doi:10.1016/j.physc.2004.01.050

STM/STS observations of Pb-doped Bi-2212 single crystals

A. Sugimoto, S. Kashiwaya, H. Eisaki, K. Oka, H. Tuchiura, Y. Tanaka

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

5 Citations (Scopus)

Abstract

The surface states of Bi_2-xPb_xSr₂CaCu ₂O_8+y (Pb-Bi-2212, x=0.6) single crystals are investigated by scanning tunneling microscopy/spectroscopy in order to clarify the origin of inhomogeneous superconducting states. The topography obtained at a cleaved surface of Pb-Bi-2212 showed the coexistence of two (modulated and non-modulated) phases with domain structure of several tens of nanometers. The spatial distribution of gap amplitude observed on a modulated region showed the lack of the correlation between the gap distribution and the modulation structure. On the other hand, the weak correlation detected between the gap amplitude and bright spots on the topography obtained at 2 V bias implies the non-negligible influence of the local atomic distortion on the superconductivity.

Original language	English
Pages (from-to)	270-274
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	412-414
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2004.01.050
Publication status	Published - 2004 Oct
Externally published	Yes

Keywords

Pb-doped Bi2212
STM/STS

ASJC Scopus subject areas

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

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10.1016/j.physc.2004.01.050

Cite this

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title = "STM/STS observations of Pb-doped Bi-2212 single crystals",

abstract = "The surface states of Bi2-xPbxSr2CaCu 2O8+y (Pb-Bi-2212, x=0.6) single crystals are investigated by scanning tunneling microscopy/spectroscopy in order to clarify the origin of inhomogeneous superconducting states. The topography obtained at a cleaved surface of Pb-Bi-2212 showed the coexistence of two (modulated and non-modulated) phases with domain structure of several tens of nanometers. The spatial distribution of gap amplitude observed on a modulated region showed the lack of the correlation between the gap distribution and the modulation structure. On the other hand, the weak correlation detected between the gap amplitude and bright spots on the topography obtained at 2 V bias implies the non-negligible influence of the local atomic distortion on the superconductivity.",

keywords = "Pb-doped Bi2212, STM/STS",

author = "A. Sugimoto and S. Kashiwaya and H. Eisaki and K. Oka and H. Tuchiura and Y. Tanaka",

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doi = "10.1016/j.physc.2004.01.050",

language = "English",

volume = "412-414",

pages = "270--274",

journal = "Physica C: Superconductivity and its Applications",

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number = "SPEC. ISS.",

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TY - JOUR

T1 - STM/STS observations of Pb-doped Bi-2212 single crystals

AU - Sugimoto, A.

AU - Kashiwaya, S.

AU - Eisaki, H.

AU - Oka, K.

AU - Tuchiura, H.

AU - Tanaka, Y.

PY - 2004/10

Y1 - 2004/10

N2 - The surface states of Bi2-xPbxSr2CaCu 2O8+y (Pb-Bi-2212, x=0.6) single crystals are investigated by scanning tunneling microscopy/spectroscopy in order to clarify the origin of inhomogeneous superconducting states. The topography obtained at a cleaved surface of Pb-Bi-2212 showed the coexistence of two (modulated and non-modulated) phases with domain structure of several tens of nanometers. The spatial distribution of gap amplitude observed on a modulated region showed the lack of the correlation between the gap distribution and the modulation structure. On the other hand, the weak correlation detected between the gap amplitude and bright spots on the topography obtained at 2 V bias implies the non-negligible influence of the local atomic distortion on the superconductivity.

AB - The surface states of Bi2-xPbxSr2CaCu 2O8+y (Pb-Bi-2212, x=0.6) single crystals are investigated by scanning tunneling microscopy/spectroscopy in order to clarify the origin of inhomogeneous superconducting states. The topography obtained at a cleaved surface of Pb-Bi-2212 showed the coexistence of two (modulated and non-modulated) phases with domain structure of several tens of nanometers. The spatial distribution of gap amplitude observed on a modulated region showed the lack of the correlation between the gap distribution and the modulation structure. On the other hand, the weak correlation detected between the gap amplitude and bright spots on the topography obtained at 2 V bias implies the non-negligible influence of the local atomic distortion on the superconductivity.

KW - Pb-doped Bi2212

KW - STM/STS

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DO - 10.1016/j.physc.2004.01.050

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SN - 0921-4534

VL - 412-414

SP - 270

EP - 274

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - SPEC. ISS.

ER -

STM/STS observations of Pb-doped Bi-2212 single crystals

Abstract

Keywords

ASJC Scopus subject areas

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