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 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.

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
388-389
DOI
出版ステータスPublished - 2003 5 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 202002 8 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

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