STM studies on structural modulation and two-phase microstructures in Pb-doped Bi2201 single crystals

Terukazu Nishizaki; Kazutaka Kudo; Naoyuki Okumura; Norio Kobayashi

doi:10.1016/j.physc.2007.04.036

STM studies on structural modulation and two-phase microstructures in Pb-doped Bi2201 single crystals

Terukazu Nishizaki, Kazutaka Kudo, Naoyuki Okumura, Norio Kobayashi

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

6 Citations (Scopus)

Abstract

We have performed scanning tunneling microscopy studies on the structural modulation of Bi_{2.12 - x}Pb_xSr_1.88CuO_y (Pb_x-Bi2201, x = 0.18, 0.27, 0.32, 0.37) single crystals. The observed STM images show the clear atomic arrangement with the four-fold symmetry on the Bi(Pb)-O layer. The wavelength λ of incommensurate structural modulations along the b-axis increases with Pb content (i.e., λ ∼ 43 Å for x = 0.18) and the modulations completely disappear for x ∼ 0.37. In the intermediate content (x ∼ 0.27, 0.32), we find two-phase microstructures which consist of the modulated region with λ ∼ 46 Å and the modulation-free region.

Original language	English
Pages (from-to)	156-157
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	460-462 I
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2007.04.036
Publication status	Published - Sep 1 2007
Externally published	Yes

Keywords

Pb-doped Bi2201
Phase separation
Scanning tunneling microscopy
Structural modulation

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.2007.04.036

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@article{2065aadfe98b47f798c410a76adfdff0,

title = "STM studies on structural modulation and two-phase microstructures in Pb-doped Bi2201 single crystals",

abstract = "We have performed scanning tunneling microscopy studies on the structural modulation of Bi2.12 - xPbxSr1.88CuOy (Pbx-Bi2201, x = 0.18, 0.27, 0.32, 0.37) single crystals. The observed STM images show the clear atomic arrangement with the four-fold symmetry on the Bi(Pb)-O layer. The wavelength λ of incommensurate structural modulations along the b-axis increases with Pb content (i.e., λ ∼ 43 {\AA} for x = 0.18) and the modulations completely disappear for x ∼ 0.37. In the intermediate content (x ∼ 0.27, 0.32), we find two-phase microstructures which consist of the modulated region with λ ∼ 46 {\AA} and the modulation-free region.",

keywords = "Pb-doped Bi2201, Phase separation, Scanning tunneling microscopy, Structural modulation",

author = "Terukazu Nishizaki and Kazutaka Kudo and Naoyuki Okumura and Norio Kobayashi",

note = "Funding Information: This work was partly supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports, and Culture of Japan and by the CTC program under JSPS. We thank Y. Murakami of IMR for EPMA analysis. ",

year = "2007",

month = sep,

day = "1",

doi = "10.1016/j.physc.2007.04.036",

language = "English",

volume = "460-462 I",

pages = "156--157",

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

issn = "0921-4534",

publisher = "Elsevier",

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TY - JOUR

T1 - STM studies on structural modulation and two-phase microstructures in Pb-doped Bi2201 single crystals

AU - Nishizaki, Terukazu

AU - Kudo, Kazutaka

AU - Okumura, Naoyuki

AU - Kobayashi, Norio

N1 - Funding Information: This work was partly supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports, and Culture of Japan and by the CTC program under JSPS. We thank Y. Murakami of IMR for EPMA analysis.

PY - 2007/9/1

Y1 - 2007/9/1

N2 - We have performed scanning tunneling microscopy studies on the structural modulation of Bi2.12 - xPbxSr1.88CuOy (Pbx-Bi2201, x = 0.18, 0.27, 0.32, 0.37) single crystals. The observed STM images show the clear atomic arrangement with the four-fold symmetry on the Bi(Pb)-O layer. The wavelength λ of incommensurate structural modulations along the b-axis increases with Pb content (i.e., λ ∼ 43 Å for x = 0.18) and the modulations completely disappear for x ∼ 0.37. In the intermediate content (x ∼ 0.27, 0.32), we find two-phase microstructures which consist of the modulated region with λ ∼ 46 Å and the modulation-free region.

AB - We have performed scanning tunneling microscopy studies on the structural modulation of Bi2.12 - xPbxSr1.88CuOy (Pbx-Bi2201, x = 0.18, 0.27, 0.32, 0.37) single crystals. The observed STM images show the clear atomic arrangement with the four-fold symmetry on the Bi(Pb)-O layer. The wavelength λ of incommensurate structural modulations along the b-axis increases with Pb content (i.e., λ ∼ 43 Å for x = 0.18) and the modulations completely disappear for x ∼ 0.37. In the intermediate content (x ∼ 0.27, 0.32), we find two-phase microstructures which consist of the modulated region with λ ∼ 46 Å and the modulation-free region.

KW - Pb-doped Bi2201

KW - Phase separation

KW - Scanning tunneling microscopy

KW - Structural modulation

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U2 - 10.1016/j.physc.2007.04.036

DO - 10.1016/j.physc.2007.04.036

M3 - Article

AN - SCOPUS:34548213685

VL - 460-462 I

SP - 156

EP - 157

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - SPEC. ISS.

ER -

STM studies on structural modulation and two-phase microstructures in Pb-doped Bi2201 single crystals

Abstract

Keywords

ASJC Scopus subject areas

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