▎ 摘　　要

Finding high-temperature superconductors has been one of the main challenges of condensed matter physics. Recent progress in this regard includes the reports of room-temperature superconductivity in carbonaceous sulfur hydride. However, this superconductivity is strongly restricted by an extremely high-pressure condition (similar to 100GPa) that makes it difficult to apply in technology and industry. Therefore, the cuprate materials with T-c = 133.5 K are considered as the highest temperature superconductors at low pressures. The main purpose of the present work is to open doors toward finding high-temperature superconductivity at low pressure. For this purpose, we consider two graphene layers with sine form corrugations where their honeycomb patterns are exactly on top of each other with some doped molecules placed between them. We consider H2S, H3S, and CeH9 as doped molecules, separately. Employing the lowest-order constrained variational method, we calculate thermodynamic quantities of the system. Based on pressure-density and magnetic susceptibility diagrams of the system, we observe a second-order phase transition at T-c = 186.3 K and P-c = 2.35 K.angstrom(-3) for valence electrons with CeH9 doped molecules. Meanwhile, no phase transition occurs for H2S and H3S at T > 133.5 K. The novel result of this paper is the prediction of a critical temperature which is approximately 53 K greater than the cuprate materials without applying the external pressure.