학술논문
Substrate enhanced superconductivity in Li-decorated graphene
Document Type
Working Paper
Source
EPL 104, 47013 (2013)
Subject
Language
Abstract
We investigate the role of the substrate for the strength of the electon 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 $T_{c0}=10.33$ K 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.
Comment: 11 pages, 3 figures, and 1 table
Comment: 11 pages, 3 figures, and 1 table