Experimental study of electron-phonon interaction in MgB2

Setsuko Tajima; Takahiko Masui; James Quilty; Sergey Lee; Ayako Yamamoto; Akio Yamanaka

doi:10.1016/S0921-4534(02)02670-9

Experimental study of electron-phonon interaction in MgB₂

Setsuko Tajima, Takahiko Masui, James Quilty, Sergey Lee, Ayako Yamamoto, Akio Yamanaka

研究成果: Conference article › 査読

5 被引用数 (Scopus)

抄録

From precise analyses of resistivity data and Raman scattering spectra from MgB₂ single crystals, we have extracted the electron-phonon (e-p) coupling constants and specified the relevant phonon mode and electronic bands that play a main role in the superconductivity. It has been demonstrated that the strong coupling of the E_2g boron vibrational mode with the σ-band holes governs the normal state conduction and the high-T_c superconductivity mechanism. The smaller gap on the π-bands found by k-selective Raman scattering measurements is reconciled with the weak e-p coupling and large scattering rate in these bands.

本文言語	English
ページ（範囲）	103-104
ページ数	2
ジャーナル	Physica C: Superconductivity and its applications
巻	388-389
DOI	https://doi.org/10.1016/S0921-4534(02)02670-9
出版ステータス	Published - 2003 5月 1
外部発表	はい
イベント	proceedings of the 23rd international conference on low temper - Hiroshima, Japan 継続期間: 2002 8月 20 → 2002 8月 27

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
エネルギー工学および電力技術
電子工学および電気工学

文献へのアクセス

10.1016/S0921-4534(02)02670-9

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引用スタイル

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abstract = "From precise analyses of resistivity data and Raman scattering spectra from MgB2 single crystals, we have extracted the electron-phonon (e-p) coupling constants and specified the relevant phonon mode and electronic bands that play a main role in the superconductivity. It has been demonstrated that the strong coupling of the E2g boron vibrational mode with the σ-band holes governs the normal state conduction and the high-Tc superconductivity mechanism. The smaller gap on the π-bands found by k-selective Raman scattering measurements is reconciled with the weak e-p coupling and large scattering rate in these bands.",

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AU - Masui, Takahiko

AU - Quilty, James

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AU - Yamanaka, Akio

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N2 - From precise analyses of resistivity data and Raman scattering spectra from MgB2 single crystals, we have extracted the electron-phonon (e-p) coupling constants and specified the relevant phonon mode and electronic bands that play a main role in the superconductivity. It has been demonstrated that the strong coupling of the E2g boron vibrational mode with the σ-band holes governs the normal state conduction and the high-Tc superconductivity mechanism. The smaller gap on the π-bands found by k-selective Raman scattering measurements is reconciled with the weak e-p coupling and large scattering rate in these bands.

AB - From precise analyses of resistivity data and Raman scattering spectra from MgB2 single crystals, we have extracted the electron-phonon (e-p) coupling constants and specified the relevant phonon mode and electronic bands that play a main role in the superconductivity. It has been demonstrated that the strong coupling of the E2g boron vibrational mode with the σ-band holes governs the normal state conduction and the high-Tc superconductivity mechanism. The smaller gap on the π-bands found by k-selective Raman scattering measurements is reconciled with the weak e-p coupling and large scattering rate in these bands.

KW - Electron-phonon coupling

KW - MgB

KW - Raman scattering

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