Electron-phonon interaction and lattice dynamics in BaPb1-xBixO3

M. Shirai; N. Suzuki; K. Motizuki

doi:10.1080/00150198908216754

Electron-phonon interaction and lattice dynamics in BaPb_1-xBi_xO₃

M. Shirai, N. Suzuki, K. Motizuki

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

Abstract

Microscopic theory of electron-lattice interaction and lattice dynamics of BaPb_1-xBi_xO₃is developed on the basis of the realistic electronic band structure. Owing to a strong electron-lattice interaction, a remarkable frequency renormalization and a large linewidth are found for only the longitudinal oxygen stretching mode and their magnitude increases with increasing Bi concentration. To discuss the superconductivity of this compound the spectral function α²F(ω) and the dimensionless electron-phonon coupling constant X are calculated. The large renormalization of the longitudinal oxygen stretching mode causes significant enhancement of X as well as remarkable modification of the shape of α²F(ω). A high superconducting transition temperature such as T_c~ 10 K is expected.

Original language	English
Pages (from-to)	99-103
Number of pages	5
Journal	Ferroelectrics
Volume	96
Issue number	1
DOIs	https://doi.org/10.1080/00150198908216754
Publication status	Published - 1989 Aug 1
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Electron-phonon interaction and lattice dynamics in BaPb1-xBixO3",

abstract = "Microscopic theory of electron-lattice interaction and lattice dynamics of BaPb1-xBixO3is developed on the basis of the realistic electronic band structure. Owing to a strong electron-lattice interaction, a remarkable frequency renormalization and a large linewidth are found for only the longitudinal oxygen stretching mode and their magnitude increases with increasing Bi concentration. To discuss the superconductivity of this compound the spectral function α2F(ω) and the dimensionless electron-phonon coupling constant X are calculated. The large renormalization of the longitudinal oxygen stretching mode causes significant enhancement of X as well as remarkable modification of the shape of α2F(ω). A high superconducting transition temperature such as Tc~ 10 K is expected.",

author = "M. Shirai and N. Suzuki and K. Motizuki",

note = "Funding Information: This work is supported by a Grant-in-Aid of Scientific Research on Priority Areas (No. 63631007) from the Ministry of Education, Science and Culture.",

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T1 - Electron-phonon interaction and lattice dynamics in BaPb1-xBixO3

AU - Shirai, M.

AU - Suzuki, N.

AU - Motizuki, K.

N1 - Funding Information: This work is supported by a Grant-in-Aid of Scientific Research on Priority Areas (No. 63631007) from the Ministry of Education, Science and Culture.

PY - 1989/8/1

Y1 - 1989/8/1

N2 - Microscopic theory of electron-lattice interaction and lattice dynamics of BaPb1-xBixO3is developed on the basis of the realistic electronic band structure. Owing to a strong electron-lattice interaction, a remarkable frequency renormalization and a large linewidth are found for only the longitudinal oxygen stretching mode and their magnitude increases with increasing Bi concentration. To discuss the superconductivity of this compound the spectral function α2F(ω) and the dimensionless electron-phonon coupling constant X are calculated. The large renormalization of the longitudinal oxygen stretching mode causes significant enhancement of X as well as remarkable modification of the shape of α2F(ω). A high superconducting transition temperature such as Tc~ 10 K is expected.

AB - Microscopic theory of electron-lattice interaction and lattice dynamics of BaPb1-xBixO3is developed on the basis of the realistic electronic band structure. Owing to a strong electron-lattice interaction, a remarkable frequency renormalization and a large linewidth are found for only the longitudinal oxygen stretching mode and their magnitude increases with increasing Bi concentration. To discuss the superconductivity of this compound the spectral function α2F(ω) and the dimensionless electron-phonon coupling constant X are calculated. The large renormalization of the longitudinal oxygen stretching mode causes significant enhancement of X as well as remarkable modification of the shape of α2F(ω). A high superconducting transition temperature such as Tc~ 10 K is expected.

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Electron-phonon interaction and lattice dynamics in BaPb_1-xBi_xO₃

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