Structure-dependent metal–insulator transition in one-dimensional Hubbard superlattice
Zhang Liang-Liang†a) 
, Huang Jina) , Duan Cheng-Bob) , Wang Wei-Zhonga)
, Huang Jin
Structure-dependent metal–insulator transition in one-dimensional Hubbard superlattice |
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Zhang Liang-Liang†
, Huang Jin |
| Charge gap Δ C (triangles) and spin gap Δ S (squares) as functions of the orbital energy ε for different L 0 and U . (a) L 0 = 3, U = 1; (b) L 0 = 3, U = 8; (c) L 0 = 4, U = 1; (d) L 0 = 4, U = 8. |
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