We investigate the role of the substrate for the strength of the electron-phonon coupling in Li-decorated graphene. We find that the interaction with a h-BN substrate leads to a significant enhancement from to , which corresponds to a 25% increase of the transition temperature from to . The superconducting gaps amount to 1.56 meV (suspended) and 1.98 meV (supported). These findings open up a new route to enhanced superconducting transition temperatures in graphene-based materials by substrate engineering. © 2013 EPLA.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We thank G. PROFETA for fruitful discussions. This work is supported by US DOE, ERC-DM-321031, and VR.
ASJC Scopus subject areas
- General Physics and Astronomy