Exchange and Correlation Effects on the Spin and Charge Susceptibilities of Tilted 1T′ MoS₂

The exchange and correlation energies due to the Coulomb interactions in monolayer tilted 1T′MoS₂ are calculated. We use the Lindhard formalism for the polarizability propagator. Many- body effects in such Dirac-like materials are studied with an emphasis on the influence of the mis- alignment of the conduction and valence subbands. Our calculations have shown that the presence of an energy band gap leads to a reduced exchange energy, which has some potential applications, such as, tunability of exciton polariton and plasmon excitations. Since 1T′MoS₂ acquires two energy gaps associated with up- and down- pseudospin, we can adjust its electronic properties in a wider range by varying these two band gaps in contrast with graphene.