Vibrational Spectroscopy of Superconducting MgB2 by Neutron Inelastic Scattering

Takahiro Muranaka, Serena Margadonna, Isabelle Maurin, Kierin Brigatti, Daniele Colognesi, Kosmas Prassides, Yoshihiro Iwasa, Masatoshi Arai, Masaki Takata, Jun Akimitsu

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Neutron inelastic scattering measurements have been performed on superconducting MgB2 above and below Tc. The temperature dependence of the generalized phonon density-of-states showed clear anomalous behaviour near 24 meV in the acoustic phonon region, which may be interpreted as evidence of a substantial contribution to the total electron-phonon coupling strength deriving from these phonons. Weaker evidence for a corresponding response in the high-energy B bond stretching phonons was also encountered.

Original languageEnglish
Pages (from-to)1480-1482
Number of pages3
Journaljournal of the physical society of japan
Volume70
Issue number6
DOIs
Publication statusPublished - 2001 Jun 1

Keywords

  • Electron-phonon coupling
  • MgB
  • Neutron inelastic scattering
  • Phonon density of states
  • Superconductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Muranaka, T., Margadonna, S., Maurin, I., Brigatti, K., Colognesi, D., Prassides, K., Iwasa, Y., Arai, M., Takata, M., & Akimitsu, J. (2001). Vibrational Spectroscopy of Superconducting MgB2 by Neutron Inelastic Scattering. journal of the physical society of japan, 70(6), 1480-1482. https://doi.org/10.1143/JPSJ.70.1480