▎ 摘　　要

Many electron correlations in stage-1 graphene intercalation compounds are studied in generalized random-phase approximation. With this approximation, we are able to study short-range exchange and correlation effects in graphene intercalation compounds. These exchange correlations lead to BCS superconducting states in which one electron correlates with another via its correlation hole to form a stable pair of electrons known as Cooper pair. Cooper pair energies are calculated as the excitations in S(q, omega) following a method similar to exciton energy calculations. Short-range effects governing local field correction G(q, omega) are studied for all wave vectors and frequencies. We have found a reasonable agreement between our results and the earlier reported theoretical results.