The role of electron-phonon interaction in oxide superconductors

Kazuko Motizuki, Masafumi Shirai

研究成果: Article査読

9 被引用数 (Scopus)

抄録

The electron-phonon (EP) interaction and lattice dynamics are investigated microscopically for oxide superconductors, BaxK1-xBiO3 (BKB) and La2-xSrxCuO4 (LSC), on the basis of their realistic tight-bi nding bands fitted to the first-principle bands of each compound. By using the EP interaction and renormalized phonons we have calculated the spectral functions of BKB and LSC. In the framework of the phonon-mediated pairing mechanism, superconducting properties such as the transition temperature, the gap function and the tunneling spectra are calculated by solving the Eliashberg equation. The results for BKB are in good agreement with observations. For LSC, the calculated results are compared with recent observations and discussed in connection with those for BKB.

本文言語English
ページ(範囲)816-821
ページ数6
ジャーナルPhysica B: Physics of Condensed Matter
186-188
C
DOI
出版ステータスPublished - 1993 5月 2
外部発表はい

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
  • 電子工学および電気工学

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