Experimental study of electron-phonon interaction in MgB2

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

Research output: Contribution to journalArticle

5 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)103-104
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume388-389
DOIs
Publication statusPublished - 2003 May
Externally publishedYes

Fingerprint

Electron-phonon interactions
electron phonon interactions
Superconductivity
Raman scattering
Boron
Electrons
superconductivity
Single crystals
Scattering
Raman spectra
scattering
vibration mode
boron
electrons
conduction
electrical resistivity
single crystals
electronics

Keywords

  • Electron-phonon coupling
  • MgB
  • Raman scattering
  • Two gaps

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Experimental study of electron-phonon interaction in MgB2. / Tajima, Setsuko; Masui, Takahiko; Quilty, James; Lee, Sergey; Yamamoto, Ayako; Yamanaka, Akio.

In: Physica C: Superconductivity and its Applications, Vol. 388-389, 05.2003, p. 103-104.

Research output: Contribution to journalArticle

Tajima, Setsuko ; Masui, Takahiko ; Quilty, James ; Lee, Sergey ; Yamamoto, Ayako ; Yamanaka, Akio. / Experimental study of electron-phonon interaction in MgB2. In: Physica C: Superconductivity and its Applications. 2003 ; Vol. 388-389. pp. 103-104.
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