The superconducting dome in electron-doped MoS2 is recreated from first principles and traced to the 1x1 H to 2x2 charge-density-wave transition and later structural phases.
Direct Observation of Superconductivity in Calcium-Intercalated Bilayer Graphene by in situ Electrical Transport Measurements
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We report the superconductivity in Ca-intercalated bilayer graphene C$_6$CaC$_6$, the thinnest limit of Ca graphite intercalation compound. We performed \textit{in situ} electrical transport measurements on pristine bilayer graphene, C$_6$LiC$_6$ and C$_6$CaC$_6$ fabricated on SiC substrate under zero and non-zero magnetic field. While both bilayer graphene and C$_6$LiC$_6$ show non-superconducting behavior, C$_6$CaC$_6$ exhibits the superconductivity with transition temperature ($T_{{\rm c}}$) of 4.0 K. The observed $T_{{\rm c}}$ in C$_6$CaC$_6$ and the absence of superconductivity in C$_6$LiC$_6$ show a good agreement with the theoretical prediction, suggesting the importance of a free-electron-like metallic band at the Fermi level to drive the superconductivity.
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Understanding the origin of superconducting dome in electron-doped MoS$_2$ monolayer
The superconducting dome in electron-doped MoS2 is recreated from first principles and traced to the 1x1 H to 2x2 charge-density-wave transition and later structural phases.