Publication Date:
2018-02-22
Description:
Author(s): Dmitry Yu. Usachov, Alexander V. Fedorov, Oleg Yu. Vilkov, Ilya I. Ogorodnikov, Mikhail V. Kuznetsov, Alexander Grüneis, Clemens Laubschat, and Denis V. Vyalikh Superconductivity in two-dimensional materials remains largely unexplored and attracts much attention. Although graphene is not a superconductor, adsorption of alkali metals on its surface may enhance electron-phonon coupling (EPC) sufficiently to induce superconductivity. Here, using photoemission spectroscopy, the authors study the electronic structure and EPC in a Li-doped graphene monolayer weakly bonded to a cobalt substrate. It is shown that EPC is high enough to create superconductivity in graphene, however the nonmagnetic graphene layer is clamped between two oppositely magnetized atomic layers. This condition makes the studied system a promising platform for understanding the influence of magnetic environment on superconductivity at low dimensions. [Phys. Rev. B 97, 085132] Published Wed Feb 21, 2018
Keywords:
Electronic structure and strongly correlated systems
Print ISSN:
1098-0121
Electronic ISSN:
1095-3795
Topics:
Physics