Combined effects of disorders and electron–electron interactions upon metal–insulator transition in 2D nonbipartite lattice
نویسندگان
چکیده
We examined the characteristics of a metal–insulator transition on a two-dimensional nonbipartite lattice when both disorders and electron interactions are present. Using a real-space renormalization group method and finite-size scaling analysis we have found that after the disordered system transits from the insulating state to the metal one, it can reenter an insulating state if there is a further increase in the electron–electron interactions. 2003 Elsevier B.V. All rights reserved. PACS: 71.30.+h; 89.75.Da; 71.10.Fd
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