Non-adiabatic superconductivity in the electron-doped graphene
- 1 September 2021
- journal article
- research article
- Published by IOP Publishing in Europhysics Letters
- Vol. 135 (6), 67002
- https://doi.org/10.1209/0295-5075/ac2248
Abstract
In the present study, we investigate impact of the non-adiabatic effects on the superconducting state in the electron-doped graphene. In particular, by using the Eliashberg formalism we analyze case scenario of the nitrogen-doped graphene, showing that the non-adiabatic effects complement electron-electron interaction and notably reduce (up to ∽40 %) pivotal thermodynamic properties, such as: the critical temperature, the superconducting gap and their characteristic ratio. Interestingly, the influence of the non-adiabatic effects is found to rise together with the increase of the depairing Coulomb interaction. These observations are elucidated based on the structure of the vertex corrections to the electron-phonon interaction. As a result, we draw direction for the future research in the field of the two-dimensional non-adiabatic superconductivity.Keywords
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