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Graphene micro-substrate induced high electron-phonon coupling in MgB2

Journal Article


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Abstract


  • Electron-phonon coupling strength was studied in graphene-MgB2 composites to explore the possibilities for a higher superconducting transition temperature (Tc). For the first time in the experimental work on MgB2, the Raman active E2g mode was split into two parts: a softened mode corresponding to tensile strain and a hardened mode attributed to the carbon substitution effect. The tensile strain effect is suggested to improve Tc of graphene-MgB2 composites because it increases the electron-phonon coupling strength of MgB2.

Authors


  •   Li, W (external author)
  •   Xu, Xun
  •   De Silva, Kaludewa Sujeewa Buddhimali. (external author)
  •   Xiang, Feixiang (external author)
  •   Dou, Shi Xue

Publication Date


  • 2013

Citation


  • Li, W. X., Xu, X., De Silva, K. S. B., Xiang, F. X. & Dou, S. X. (2013). Graphene micro-substrate induced high electron-phonon coupling in MgB2. IEEE Transactions on Applied Superconductivity, 23 (3), 7000104-1-7000104-4.

Scopus Eid


  • 2-s2.0-84872312151

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1357&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/352

Has Global Citation Frequency


Start Page


  • 7000104-1

End Page


  • 7000104-4

Volume


  • 23

Issue


  • 3

Place Of Publication


  • United States

Abstract


  • Electron-phonon coupling strength was studied in graphene-MgB2 composites to explore the possibilities for a higher superconducting transition temperature (Tc). For the first time in the experimental work on MgB2, the Raman active E2g mode was split into two parts: a softened mode corresponding to tensile strain and a hardened mode attributed to the carbon substitution effect. The tensile strain effect is suggested to improve Tc of graphene-MgB2 composites because it increases the electron-phonon coupling strength of MgB2.

Authors


  •   Li, W (external author)
  •   Xu, Xun
  •   De Silva, Kaludewa Sujeewa Buddhimali. (external author)
  •   Xiang, Feixiang (external author)
  •   Dou, Shi Xue

Publication Date


  • 2013

Citation


  • Li, W. X., Xu, X., De Silva, K. S. B., Xiang, F. X. & Dou, S. X. (2013). Graphene micro-substrate induced high electron-phonon coupling in MgB2. IEEE Transactions on Applied Superconductivity, 23 (3), 7000104-1-7000104-4.

Scopus Eid


  • 2-s2.0-84872312151

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1357&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/352

Has Global Citation Frequency


Start Page


  • 7000104-1

End Page


  • 7000104-4

Volume


  • 23

Issue


  • 3

Place Of Publication


  • United States