Volume 108, Number 6, December 2014
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||24 December 2014|
Strain-enhanced superconductivity in Li-doped graphene
1 Institute of Physics, University of Belgrade - Pregrevica 118, 11080 Belgrade, Serbia
2 Center for Surface and Nanoanalytics, Johannes Kepler University - Linz, Austria
3 Science Program, Texas A&M University at Qatar - P.O. Box 23874, Doha, Qatar
Received: 20 October 2014
Accepted: 4 December 2014
We present a new way to enhance the electron-phonon coupling constant and the critical superconducting temperature of graphene, significantly beyond all reported values. Using density functional theory, we explore the application effects of the tensile biaxial strain on the lithium-intercalated graphene. Both effects together, the presence of adatom and the strain, trigger the enhancement of critical temperature, up to 300%, compared to non-strained lithium-intercalated graphene.
PACS: 74.70.Wz – Carbon-based superconductors / 63.20.kd – Phonon-electron interactions / 71.15.Mb – Density functional theory, local density approximation, gradient and other corrections
© EPLA, 2014
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