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Substrate-enhanced superconductivity in Li-decorated graphene
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Los Alamos National Laboratory, USA.
2013 (English)In: Europhysics letters, ISSN 0295-5075, E-ISSN 1286-4854, Vol. 104, no 4, 47013- p.Article in journal (Refereed) Published
Abstract [en]

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 lambda(0) = 0.62 to lambda(1) = 0.67, which corresponds to a 25% increase of the transition temperature from T-c0 = 10.33K to T-c1 = 12.98 K. 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.

Place, publisher, year, edition, pages
2013. Vol. 104, no 4, 47013- p.
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-100123DOI: 10.1209/0295-5075/104/47013ISI: 000328882700027OAI: diva2:691294


Available from: 2014-01-27 Created: 2014-01-27 Last updated: 2014-01-27Bibliographically approved

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Balatsky, Alexander V.
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Nordic Institute for Theoretical Physics (Nordita)
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