مشخصات پژوهش

Spin-pseudo-spin intra-particle entanglement of a graphene sheet in the presence of Rashba and Hubbard interactions has been investigated. Hubbard interaction is given by the mean-field approach where we have employed the realistic value of the Hubbard interaction strength of graphene, which has been provided by theoretical computations previously performed in this field. Results show that the Hubbard interaction with its realistic strength removes spin and pseudo-spin entanglement at one of the valleys, whereas this significantly enhances the spin and pseudospin entanglement at the other valley. Accordingly, spin and pseudospin entanglement appears to be non-symmetric between these two valleys