2D Electronic Transport with Strong Spin-Orbit Coupling in Bi2- Square Net of Y2O2Bi Thin Film Grown by Multilayer Solid-Phase Epitaxy

Ryosuke Sei; Tomoteru Fukumura; Tetsuya Hasegawa

doi:10.1021/acsami.5b07825

2D Electronic Transport with Strong Spin-Orbit Coupling in Bi^2- Square Net of Y₂O₂Bi Thin Film Grown by Multilayer Solid-Phase Epitaxy

Ryosuke Sei, Tomoteru Fukumura, Tetsuya Hasegawa

SCI - Chemistry

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

15 Citations (Scopus)

Abstract

Highly crystalline Y₂O₂Bi epitaxial thin film with monatomic Bi^2- square net layer was grown by newly developed multilayer solid phase epitaxy. High reactivity of the nanometer-scale multilayered precursor enabled efficient formation of single crystalline Y₂O₂Bi phase with one-step heating. The reductive state of Bi^2- square net was observed by X-ray photoemission spectroscopy. The electrical resistivity was one order lower than that of polycrystalline powder in previous study. The magnetotransport showed weak antilocalization effect well fitted by the Hikami-Larkin-Nagaoka model, exhibiting two-dimensional electronic nature with strong spin-orbit coupling in the Bi^2- square net.

Original language	English
Pages (from-to)	24998-25001
Number of pages	4
Journal	ACS applied materials & interfaces
Volume	7
Issue number	45
DOIs	https://doi.org/10.1021/acsami.5b07825
Publication status	Published - 2015 Nov 2

Keywords

layered oxide
solid phase epitaxy
strong spin-orbit coupling
thin film growth
topological insulator
two-dimensional electronic transport

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10.1021/acsami.5b07825

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title = "2D Electronic Transport with Strong Spin-Orbit Coupling in Bi2- Square Net of Y2O2Bi Thin Film Grown by Multilayer Solid-Phase Epitaxy",

abstract = "Highly crystalline Y2O2Bi epitaxial thin film with monatomic Bi2- square net layer was grown by newly developed multilayer solid phase epitaxy. High reactivity of the nanometer-scale multilayered precursor enabled efficient formation of single crystalline Y2O2Bi phase with one-step heating. The reductive state of Bi2- square net was observed by X-ray photoemission spectroscopy. The electrical resistivity was one order lower than that of polycrystalline powder in previous study. The magnetotransport showed weak antilocalization effect well fitted by the Hikami-Larkin-Nagaoka model, exhibiting two-dimensional electronic nature with strong spin-orbit coupling in the Bi2- square net.",

keywords = "layered oxide, solid phase epitaxy, strong spin-orbit coupling, thin film growth, topological insulator, two-dimensional electronic transport",

author = "Ryosuke Sei and Tomoteru Fukumura and Tetsuya Hasegawa",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

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AU - Sei, Ryosuke

AU - Fukumura, Tomoteru

AU - Hasegawa, Tetsuya

PY - 2015/11/2

Y1 - 2015/11/2

N2 - Highly crystalline Y2O2Bi epitaxial thin film with monatomic Bi2- square net layer was grown by newly developed multilayer solid phase epitaxy. High reactivity of the nanometer-scale multilayered precursor enabled efficient formation of single crystalline Y2O2Bi phase with one-step heating. The reductive state of Bi2- square net was observed by X-ray photoemission spectroscopy. The electrical resistivity was one order lower than that of polycrystalline powder in previous study. The magnetotransport showed weak antilocalization effect well fitted by the Hikami-Larkin-Nagaoka model, exhibiting two-dimensional electronic nature with strong spin-orbit coupling in the Bi2- square net.

AB - Highly crystalline Y2O2Bi epitaxial thin film with monatomic Bi2- square net layer was grown by newly developed multilayer solid phase epitaxy. High reactivity of the nanometer-scale multilayered precursor enabled efficient formation of single crystalline Y2O2Bi phase with one-step heating. The reductive state of Bi2- square net was observed by X-ray photoemission spectroscopy. The electrical resistivity was one order lower than that of polycrystalline powder in previous study. The magnetotransport showed weak antilocalization effect well fitted by the Hikami-Larkin-Nagaoka model, exhibiting two-dimensional electronic nature with strong spin-orbit coupling in the Bi2- square net.

KW - layered oxide

KW - solid phase epitaxy

KW - strong spin-orbit coupling

KW - thin film growth

KW - topological insulator

KW - two-dimensional electronic transport

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2D Electronic Transport with Strong Spin-Orbit Coupling in Bi^2- Square Net of Y₂O₂Bi Thin Film Grown by Multilayer Solid-Phase Epitaxy

Abstract

Keywords

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