Electronic state of MgB2 superconductor

S. Tajima, T. Masui, H. Uchiyama, J. W. Quilty, Yu Eltsev, S. Lee, Ayako Yamamoto, H. Mori

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Thanks to the high quality single crystals of MgB2, we have measured various physical properties to extract important features of the electronic state in this superconductor. The electron density maps calculated from a precise X-ray diffraction analysis and the band dispersions determined by the angle-resolved photoemission spectroscopy demonstrate that the boron orbitals play a central role, just as predicted by the band theory. The strong coupling of the high frequency optical phonon with the boron bands is indicated in resistivity and Raman scattering spectra. Although the multi-band structure significantly affects various normal state properties, no clear multi-gap feature can be observed in the Raman scattering spectra below Tc.

Original languageEnglish
Pages (from-to)315-319
Number of pages5
JournalCurrent Applied Physics
Volume2
Issue number4
DOIs
Publication statusPublished - 2002 Aug
Externally publishedYes

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Keywords

  • Electron-phonon coupling
  • Electronic state
  • MgB
  • Superconductivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Tajima, S., Masui, T., Uchiyama, H., Quilty, J. W., Eltsev, Y., Lee, S., ... Mori, H. (2002). Electronic state of MgB2 superconductor. Current Applied Physics, 2(4), 315-319. https://doi.org/10.1016/S1567-1739(02)00117-7