Plasma excitations in the superconducting state of two-band layered superconductors

T. Koyama; H. Matsumoto; M. Machida

doi:10.1016/j.physc.2009.05.168

Plasma excitations in the superconducting state of two-band layered superconductors

T. Koyama, H. Matsumoto, M. Machida

Institute for Materials Research (IMR)

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

Abstract

We investigate the low-frequency plasma modes polarized in the c-direction in two-band layered superconductors. The dynamic dielectric function ε{lunate} (ω, q) is derived at T = 0, using the generalized random-phase-approximation which is consistent with the Hartree-Fock single-particle states. It is shown that the dielectric function has two zero-points which correspond to the longitudinal plasma modes in two-band layered superconductors.

Original language	English
Pages (from-to)	1048-1051
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	469
Issue number	15-20
DOIs	https://doi.org/10.1016/j.physc.2009.05.168
Publication status	Published - 2009 Oct 15

Keywords

Dielecrtic function
Plasma mode
Two-band superconductors

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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AU - Machida, M.

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N2 - We investigate the low-frequency plasma modes polarized in the c-direction in two-band layered superconductors. The dynamic dielectric function ε{lunate} (ω, q) is derived at T = 0, using the generalized random-phase-approximation which is consistent with the Hartree-Fock single-particle states. It is shown that the dielectric function has two zero-points which correspond to the longitudinal plasma modes in two-band layered superconductors.

AB - We investigate the low-frequency plasma modes polarized in the c-direction in two-band layered superconductors. The dynamic dielectric function ε{lunate} (ω, q) is derived at T = 0, using the generalized random-phase-approximation which is consistent with the Hartree-Fock single-particle states. It is shown that the dielectric function has two zero-points which correspond to the longitudinal plasma modes in two-band layered superconductors.

KW - Dielecrtic function

KW - Plasma mode

KW - Two-band superconductors

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Plasma excitations in the superconducting state of two-band layered superconductors

Abstract

Keywords

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